<!doctype html>
<html lang="en-US">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1">
    <link rel="profile" href="https://gmpg.org/xfn/11">
                <link rel="preload" as="font" type="font/woff2" href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/fonts/InventionVF_W_Wght.woff2" crossorigin="anonymous">
            <link rel="preload" as="font" type="font/woff2" href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/fonts/InventionVF_Italics_W_Wght.woff2" crossorigin="anonymous">
            <link rel="preload" as="font" type="font/woff2" href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/fonts/InventionVF_W_Wght.woff2" crossorigin="anonymous">
            <link rel="preload" as="font" type="font/woff2" href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/fonts/InventionVF_Italics_W_Wght.woff2" crossorigin="anonymous">
            <link rel="preload" as="font" type="font/woff2" href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/fonts/InventionVF_W_Wght.woff2" crossorigin="anonymous">
            <link rel="preload" as="font" type="font/woff2" href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/fonts/InventionVF_Italics_W_Wght.woff2" crossorigin="anonymous">
            <meta name='robots' content='index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1' />
	<style>img:is([sizes="auto" i], [sizes^="auto," i]) { contain-intrinsic-size: 3000px 1500px }</style>
	
	<!-- This site is optimized with the Yoast SEO plugin v21.9.1 - https://yoast.com/wordpress/plugins/seo/ -->
	<title>HIV - Merck.com</title>
	<link rel="canonical" href="https://www.merck.com/research/infectious-diseases/hiv/" />
	<meta property="og:locale" content="en_US" />
	<meta property="og:type" content="article" />
	<meta property="og:title" content="HIV - Merck.com" />
	<meta property="og:description" content="Faces behind our HIV research Working together with the HIV community with a goal to end the epidemic We’ve been committed to advancing science for the treatment and prevention of HIV since the beginning of the HIV epidemic, but we know it takes all of us to make a difference. Learn more about the vibrant [&hellip;]" />
	<meta property="og:url" content="https://www.merck.com/research/infectious-diseases/hiv/" />
	<meta property="og:site_name" content="Merck.com" />
	<meta property="article:modified_time" content="2026-04-02T16:05:46+00:00" />
	<meta property="og:image" content="https://www.merck.com/wp-content/uploads/sites/124/2022/03/Merck.png" />
	<meta property="og:image:width" content="3056" />
	<meta property="og:image:height" content="1380" />
	<meta property="og:image:type" content="image/png" />
	<meta name="twitter:card" content="summary_large_image" />
	<meta name="twitter:label1" content="Est. reading time" />
	<meta name="twitter:data1" content="1 minute" />
	<script type="application/ld+json" class="yoast-schema-graph">{"@context":"https://schema.org","@graph":[{"@type":"WebPage","@id":"https://www.merck.com/research/infectious-diseases/hiv/","url":"https://www.merck.com/research/infectious-diseases/hiv/","name":"HIV - Merck.com","isPartOf":{"@id":"https://vip2-msd.com/merckcom-old/#website"},"datePublished":"2025-11-19T18:07:29+00:00","dateModified":"2026-04-02T16:05:46+00:00","breadcrumb":{"@id":"https://www.merck.com/research/infectious-diseases/hiv/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https://www.merck.com/research/infectious-diseases/hiv/"]}]},{"@type":"BreadcrumbList","@id":"https://www.merck.com/research/infectious-diseases/hiv/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Research","item":"https://www.merck.com/research/"},{"@type":"ListItem","position":2,"name":"Infectious diseases","item":"https://www.merck.com/research/infectious-diseases/"},{"@type":"ListItem","position":3,"name":"HIV"}]},{"@type":"WebSite","@id":"https://vip2-msd.com/merckcom-old/#website","url":"https://vip2-msd.com/merckcom-old/","name":"Merck.com","description":"Just another vip-msd.com site","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://vip2-msd.com/merckcom-old/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"}]}</script>
	<!-- / Yoast SEO plugin. -->


<link rel='dns-prefetch' href='//cdn.cookielaw.org' />
<link rel='stylesheet' id='wp-block-library-css' href='https://www.merck.com/wp-includes/css/dist/block-library/style.min.css?ver=6.8.5' media='all' />
<style id='classic-theme-styles-inline-css'>
/*! This file is auto-generated */
.wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none}
</style>
<style id='global-styles-inline-css'>
:root{--wp--preset--aspect-ratio--square: 1;--wp--preset--aspect-ratio--4-3: 4/3;--wp--preset--aspect-ratio--3-4: 3/4;--wp--preset--aspect-ratio--3-2: 3/2;--wp--preset--aspect-ratio--2-3: 2/3;--wp--preset--aspect-ratio--16-9: 16/9;--wp--preset--aspect-ratio--9-16: 9/16;--wp--preset--color--black: #000000;--wp--preset--color--cyan-bluish-gray: #abb8c3;--wp--preset--color--white: #ffffff;--wp--preset--color--pale-pink: #f78da7;--wp--preset--color--vivid-red: #cf2e2e;--wp--preset--color--luminous-vivid-orange: #ff6900;--wp--preset--color--luminous-vivid-amber: #fcb900;--wp--preset--color--light-green-cyan: #7bdcb5;--wp--preset--color--vivid-green-cyan: #00d084;--wp--preset--color--pale-cyan-blue: #8ed1fc;--wp--preset--color--vivid-cyan-blue: #0693e3;--wp--preset--color--vivid-purple: #9b51e0;--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple: linear-gradient(135deg,rgba(6,147,227,1) 0%,rgb(155,81,224) 100%);--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan: linear-gradient(135deg,rgb(122,220,180) 0%,rgb(0,208,130) 100%);--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange: linear-gradient(135deg,rgba(252,185,0,1) 0%,rgba(255,105,0,1) 100%);--wp--preset--gradient--luminous-vivid-orange-to-vivid-red: linear-gradient(135deg,rgba(255,105,0,1) 0%,rgb(207,46,46) 100%);--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray: linear-gradient(135deg,rgb(238,238,238) 0%,rgb(169,184,195) 100%);--wp--preset--gradient--cool-to-warm-spectrum: linear-gradient(135deg,rgb(74,234,220) 0%,rgb(151,120,209) 20%,rgb(207,42,186) 40%,rgb(238,44,130) 60%,rgb(251,105,98) 80%,rgb(254,248,76) 100%);--wp--preset--gradient--blush-light-purple: linear-gradient(135deg,rgb(255,206,236) 0%,rgb(152,150,240) 100%);--wp--preset--gradient--blush-bordeaux: linear-gradient(135deg,rgb(254,205,165) 0%,rgb(254,45,45) 50%,rgb(107,0,62) 100%);--wp--preset--gradient--luminous-dusk: linear-gradient(135deg,rgb(255,203,112) 0%,rgb(199,81,192) 50%,rgb(65,88,208) 100%);--wp--preset--gradient--pale-ocean: linear-gradient(135deg,rgb(255,245,203) 0%,rgb(182,227,212) 50%,rgb(51,167,181) 100%);--wp--preset--gradient--electric-grass: linear-gradient(135deg,rgb(202,248,128) 0%,rgb(113,206,126) 100%);--wp--preset--gradient--midnight: linear-gradient(135deg,rgb(2,3,129) 0%,rgb(40,116,252) 100%);--wp--preset--font-size--small: 13px;--wp--preset--font-size--medium: 20px;--wp--preset--font-size--large: 36px;--wp--preset--font-size--x-large: 42px;--wp--preset--spacing--20: 0.44rem;--wp--preset--spacing--30: 0.67rem;--wp--preset--spacing--40: 1rem;--wp--preset--spacing--50: 1.5rem;--wp--preset--spacing--60: 2.25rem;--wp--preset--spacing--70: 3.38rem;--wp--preset--spacing--80: 5.06rem;--wp--preset--shadow--natural: 6px 6px 9px rgba(0, 0, 0, 0.2);--wp--preset--shadow--deep: 12px 12px 50px rgba(0, 0, 0, 0.4);--wp--preset--shadow--sharp: 6px 6px 0px rgba(0, 0, 0, 0.2);--wp--preset--shadow--outlined: 6px 6px 0px -3px rgba(255, 255, 255, 1), 6px 6px rgba(0, 0, 0, 1);--wp--preset--shadow--crisp: 6px 6px 0px rgba(0, 0, 0, 1);}:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}:where(.wp-block-columns.is-layout-flex){gap: 2em;}:where(.wp-block-columns.is-layout-grid){gap: 2em;}:where(.wp-block-post-template.is-layout-flex){gap: 1.25em;}:where(.wp-block-post-template.is-layout-grid){gap: 1.25em;}.has-black-color{color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-color{color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-color{color: var(--wp--preset--color--white) !important;}.has-pale-pink-color{color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-color{color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-color{color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-color{color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-color{color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-color{color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-color{color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-color{color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-color{color: var(--wp--preset--color--vivid-purple) !important;}.has-black-background-color{background-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-background-color{background-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-background-color{background-color: var(--wp--preset--color--white) !important;}.has-pale-pink-background-color{background-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-background-color{background-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-background-color{background-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-background-color{background-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-background-color{background-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-background-color{background-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-background-color{background-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-background-color{background-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-background-color{background-color: var(--wp--preset--color--vivid-purple) !important;}.has-black-border-color{border-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-border-color{border-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-border-color{border-color: var(--wp--preset--color--white) !important;}.has-pale-pink-border-color{border-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-border-color{border-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-border-color{border-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-border-color{border-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-border-color{border-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-border-color{border-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-border-color{border-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-border-color{border-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-border-color{border-color: var(--wp--preset--color--vivid-purple) !important;}.has-vivid-cyan-blue-to-vivid-purple-gradient-background{background: var(--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple) !important;}.has-light-green-cyan-to-vivid-green-cyan-gradient-background{background: var(--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan) !important;}.has-luminous-vivid-amber-to-luminous-vivid-orange-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange) !important;}.has-luminous-vivid-orange-to-vivid-red-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-orange-to-vivid-red) !important;}.has-very-light-gray-to-cyan-bluish-gray-gradient-background{background: var(--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray) !important;}.has-cool-to-warm-spectrum-gradient-background{background: var(--wp--preset--gradient--cool-to-warm-spectrum) !important;}.has-blush-light-purple-gradient-background{background: var(--wp--preset--gradient--blush-light-purple) !important;}.has-blush-bordeaux-gradient-background{background: var(--wp--preset--gradient--blush-bordeaux) !important;}.has-luminous-dusk-gradient-background{background: var(--wp--preset--gradient--luminous-dusk) !important;}.has-pale-ocean-gradient-background{background: var(--wp--preset--gradient--pale-ocean) !important;}.has-electric-grass-gradient-background{background: var(--wp--preset--gradient--electric-grass) !important;}.has-midnight-gradient-background{background: var(--wp--preset--gradient--midnight) !important;}.has-small-font-size{font-size: var(--wp--preset--font-size--small) !important;}.has-medium-font-size{font-size: var(--wp--preset--font-size--medium) !important;}.has-large-font-size{font-size: var(--wp--preset--font-size--large) !important;}.has-x-large-font-size{font-size: var(--wp--preset--font-size--x-large) !important;}
:where(.wp-block-post-template.is-layout-flex){gap: 1.25em;}:where(.wp-block-post-template.is-layout-grid){gap: 1.25em;}
:where(.wp-block-columns.is-layout-flex){gap: 2em;}:where(.wp-block-columns.is-layout-grid){gap: 2em;}
:root :where(.wp-block-pullquote){font-size: 1.5em;line-height: 1.6;}
</style>
<link rel='stylesheet' id='qm-object-cache-style-css' href='https://www.merck.com/wp-content/mu-plugins/qm-plugins/qm-object-cache/css/style.css?ver=0.2' media='all' />
<link rel='stylesheet' id='MCC-styles-default-font-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/default-font.min.css?ver=1764577519' media='all' />
<link rel='stylesheet' id='MCC-styles-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/style.min.css?ver=1776849258' media='all' />
<link rel='stylesheet' id='footer-flagship-standard-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/footer-flagship-standard.min.css?ver=1764577519' media='all' />
<link rel='stylesheet' id='mcc_header_style-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/masthead-country-1.min.css?ver=1773234738' media='all' />
<link rel='stylesheet' id='banner-styles-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/bottom-banner.min.css?ver=1764577519' media='all' />
                    

        
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/js/sticky-banner.min.js?ver=1764577519" id="banner-scripts-js"></script>
<script defer="defer" src="//cdn.cookielaw.org/scripttemplates/otSDKStub.js?ver=6.8.5" data-domain-script="fd658a96-8c4a-4c03-973e-fd83f98fa618"></script><script>function OptanonWrapper() { }</script><link rel="https://api.w.org/" href="https://www.merck.com/wp-json/" /><link rel="alternate" title="JSON" type="application/json" href="https://www.merck.com/wp-json/wp/v2/pages/3678024" /><link rel='shortlink' href='https://www.merck.com/?p=3678024' />
<link rel="alternate" title="oEmbed (JSON)" type="application/json+oembed" href="https://www.merck.com/wp-json/oembed/1.0/embed?url=https%3A%2F%2Fwww.merck.com%2Fresearch%2Finfectious-diseases%2Fhiv%2F" />
<link rel="alternate" title="oEmbed (XML)" type="text/xml+oembed" href="https://www.merck.com/wp-json/oembed/1.0/embed?url=https%3A%2F%2Fwww.merck.com%2Fresearch%2Finfectious-diseases%2Fhiv%2F&#038;format=xml" />
<!-- Stream WordPress user activity plugin v4.1.1 -->
<script>
var dataLayer = dataLayer || [];
dataLayer.push({"user":{"role":"visitor","isLoggedIn":false}});
dataLayer.push({"site":[]});
</script>
<script>
(
        function( w, d, s, l, i ) {
            w[l] = w[l] || [];
            w[l].push( {'gtm.start': new Date().getTime(), event: 'gtm.js'} );
					var f = d.getElementsByTagName( s )[0],
						j = d.createElement( s ), dl = l !== 'dataLayer' ? '&l=' + l : '';
					j.async = true;
					j.src = 'https://www.googletagmanager.com/gtm.js?id=' + i + dl;
					f.parentNode.insertBefore( j, f );
				}
        )( window, document, 'script', 'dataLayer', 'GTM-M74WZDM' );
</script>
        <link rel="apple-touch-icon" sizes="180x180" href="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/apple-touch-icon.png">
    <link rel="icon" type="image/png" sizes="32x32" href="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/favicon-32x32.png">
    <link rel="icon" type="image/png" sizes="16x16" href="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/favicon-16x16.png">
    <link rel="manifest" href="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/site.webmanifest">
    <link rel="mask-icon" href="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/safari-pinned-tab.svg" color="#ffffff">
    <link rel="shortcut icon" href="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/favicon.ico">
    <meta name="msapplication-TileColor" content="#ffffff">
    <meta name="msapplication-config" content="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/browserconfig.xml">
    <meta name="theme-color" content="#ffffff">
    
<style>
    :root {
        --colorTextPrimary: #000000;
        --colorPrimary: #00857C;
        --colorPrimaryLight: #6ECEB2;
        --colorPrimaryDark: #005C55;
        --colorPrimaryDarkBlue: #0C2340;
        --colorSecondaryLime: #BFED33;
        --colorSecondaryLemon: #FFF063;
        --colorSecondaryPastelBlue: #69B8F7;
        --colorSecondaryVistaBlue: #688CE8;
        --colorSecondaryRichBlue: #5450E4;
        --colorBlack: #000000;
        --colorWhite: #FFFFFF;
        --colorOffWhite: #F7F7F7;
        --colorGray: #757575;
        --colorWarning: #FE0000;
        --colorSuccess: #029A01;
        --colorInfo: #1058A4;
        --colorGrayHRTwenty: #75757533;
        --colorGrayHRTen: #7575751a;
    }
</style></head>

<body class="wp-singular page-template-default page page-id-3678024 page-child parent-pageid-3662437 wp-theme-cex-wpvip-mhh-mhh2-mcc-theme no-sidebar mcc-us-site-type menu-no-hyphens">
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-M74WZDM&#038;user%5Brole%5D=visitor&#038;user%5BisLoggedIn%5D=0&#038;" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript><div id="page" class="site">
    <a class="skip-link screen-reader-text" href="#content">Skip to content</a>
        <header id="masthead" class="site-header">
    <div id="site-navigation" class="main-navigation">
        <div class="wrapper header-wrapper">
            
<div class="site-branding">
	<p class="site-title">        <a
            id="micro-site-logo"
            href="https://www.merck.com/"
            rel="home"
            class="site-logo-link"
            title="Merck.com"
            style=""
        >
                            <img
                    class="site-logo"
                    src="https://www.merck.com/wp-content/uploads/sites/124/2025/08/site-logo.svg"
                    alt="Site logo"
                    style=""
                />
                    </a>
    </p></div><!-- .site-branding -->
            <div id="mastheadMenu">
            <button id="siteSearchToggle" class="btn" aria-controls="site-search">
            <span class="menu-toggle-text-open">
                <img src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/search-white.svg" alt="" />
                <span>Search everything</span>
            </span>
            <span class="menu-toggle-text-close">
                <img class="lazyload" loading="lazy" data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/close.svg" alt="" />Close            </span>
        </button>
    
        <button id="siteNavigationToggle" class="btn menu-toggle" aria-controls="menuMain"  >
        <span class="menu-toggle-text-open">
            <img src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/burger-white.svg" alt="" />Menu        </span>
        <span class="menu-toggle-text-close">
            <img class="lazyload" loading="lazy" data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/close.svg" alt="" />Close        </span>
    </button>
</div>
        </div><!-- .header-wrapper -->
    </div><!-- #site-navigation -->
    <div id="site-menu" class="main-menu menu-header-template">
	<div class="wrapper">
		<a class="menucrumb" href="#">Main menu</a>
		<nav class="menu-main-menu-container"><ul id="menuMain" class="menu-main level-0 menu-open"><li id="menu-item-666469" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-666469"><a aria-expanded="false" role="button" href="https://www.merck.com/company-overview/">Company</a>
<ul class="level-1">
	<li id="menu-item-666471" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666471"><a href="https://www.merck.com/company-overview/">Who we are</a></li>
	<li id="menu-item-3640275" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3640275"><a href="https://www.merck.com/what-we-do/">What we do</a></li>
	<li id="menu-item-667007" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-667007"><a href="https://www.merck.com/stories/">Stories</a></li>
	<li id="menu-item-2773656" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2773656"><a href="https://www.merck.com/company-overview/history/">History</a></li>
	<li id="menu-item-666473" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-666473"><a aria-expanded="false" role="button" href="https://www.merck.com/company-overview/sustainability/">Sustainability</a>
	<ul class="level-2">
		<li id="menu-item-2388650" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2388650"><a href="https://www.merck.com/company-overview/sustainability/">Sustainability overview</a></li>
		<li id="menu-item-2388653" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2388653"><a href="https://www.merck.com/company-overview/sustainability/philanthropy/">Philanthropy</a></li>
		<li id="menu-item-3670900" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3670900"><a href="https://www.merck.com/company-overview/sustainability/merck-medical-outreach-program/">Merck Medical Outreach Program</a></li>
		<li id="menu-item-3666247" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3666247"><a href="https://www.merck.com/company-overview/sustainability/impact-venture-fund/">Impact Venture Fund</a></li>
		<li id="menu-item-2804132" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2804132"><a href="https://www.merck.com/company-overview/sustainability/transparency-disclosures/">Transparency disclosures</a></li>
		<li id="menu-item-2808199" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2808199"><a href="https://www.merck.com/company-overview/sustainability/sustainability-resources/">Sustainability resources</a></li>
	</ul>
</li>
	<li id="menu-item-666474" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-666474"><a aria-expanded="false" role="button" href="https://www.merck.com/company-overview/leadership/">Leadership</a>
	<ul class="level-2">
		<li id="menu-item-666483" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666483"><a href="https://www.merck.com/company-overview/leadership/">Leadership overview</a></li>
		<li id="menu-item-666484" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666484"><a href="https://www.merck.com/company-overview/leadership/board-of-directors/">Board of directors</a></li>
		<li id="menu-item-666485" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666485"><a href="https://www.merck.com/company-overview/leadership/executive-team/">Executive team</a></li>
	</ul>
</li>
	<li id="menu-item-666475" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-666475"><a aria-expanded="false" role="button" href="https://www.merck.com/company-overview/culture-and-values/">Culture &amp; values</a>
	<ul class="level-2">
		<li id="menu-item-666488" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666488"><a href="https://www.merck.com/company-overview/culture-and-values/">Culture &#038; values overview</a></li>
		<li id="menu-item-666489" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666489"><a href="https://www.merck.com/company-overview/culture-and-values/code-of-conduct/">Code of conduct, ethics &amp; compliance</a></li>
	</ul>
</li>
	<li id="menu-item-666476" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666476"><a href="https://www.merck.com/company-overview/diversity-and-inclusion/">Diversity and inclusion</a></li>
	<li id="menu-item-666477" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666477"><a href="https://www.merck.com/company-overview/policies-and-positions/">Policies and positions</a></li>
	<li id="menu-item-666479" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-666479"><a aria-expanded="false" role="button" href="https://www.merck.com/company-overview/suppliers/">Suppliers</a>
	<ul class="level-2">
		<li id="menu-item-667793" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-667793"><a href="https://www.merck.com/company-overview/suppliers/">Suppliers overview</a></li>
		<li id="menu-item-667792" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-667792"><a target="_blank" rel="noopener" href="https://msd.quantumsds.com/">Supplier registration</a></li>
		<li id="menu-item-3601080" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3601080"><a href="https://suppliers.msd.com/">Supplier help for Ariba</a></li>
	</ul>
</li>
</ul>
</li>
<li id="menu-item-14540" class="menu-item menu-item-type-post_type menu-item-object-page current-page-ancestor menu-item-has-children menu-item-14540"><a aria-expanded="false" role="button" href="https://www.merck.com/research/">Research</a>
<ul class="level-1">
	<li id="menu-item-666505" class="menu-item menu-item-type-post_type menu-item-object-page current-page-ancestor menu-item-666505"><a href="https://www.merck.com/research/">Research overview</a></li>
	<li id="menu-item-666527" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-666527"><a target="_blank" rel="noopener" aria-expanded="false" role="button" href="#">Areas of focus</a>
	<ul class="level-2">
		<li id="menu-item-666509" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666509"><a href="https://www.merck.com/research/oncology/">Oncology</a></li>
		<li id="menu-item-666507" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666507"><a href="https://www.merck.com/research/vaccines/">Vaccines</a></li>
		<li id="menu-item-3665482" class="menu-item menu-item-type-post_type menu-item-object-page current-page-ancestor menu-item-3665482"><a href="https://www.merck.com/research/infectious-diseases/">Infectious diseases</a></li>
		<li id="menu-item-3677233" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3677233"><a href="https://www.merck.com/research/cardiometabolic-and-respiratory-diseases/">Cardiometabolic and respiratory diseases </a></li>
		<li id="menu-item-3641210" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3641210"><a href="https://www.merck.com/research/immunology/">Immunology</a></li>
		<li id="menu-item-3668390" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3668390"><a href="https://www.merck.com/research/neuroscience/">Neuroscience</a></li>
		<li id="menu-item-3664805" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3664805"><a href="https://www.merck.com/research/ophthalmology/">Ophthalmology</a></li>
	</ul>
</li>
	<li id="menu-item-3667369" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-3667369"><a aria-expanded="false" role="button" href="#">Areas of innovation</a>
	<ul class="level-2">
		<li id="menu-item-3667372" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3667372"><a href="https://www.merck.com/research/areas-of-innovation/data-science-and-artificial-intelligence/">Data science and artificial intelligence </a></li>
		<li id="menu-item-3667373" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3667373"><a href="https://www.merck.com/research/areas-of-innovation/green-and-sustainable-science/">Green and sustainable science</a></li>
		<li id="menu-item-3680012" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3680012"><a href="https://www.merck.com/research/areas-of-innovation/our-therapeutic-modalities/">Our therapeutic modalities</a></li>
		<li id="menu-item-3672756" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3672756"><a href="https://www.merck.com/research/areas-of-innovation/translational-medicine/">Translational medicine</a></li>
	</ul>
</li>
	<li id="menu-item-666511" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666511"><a href="https://www.merck.com/research/product-pipeline/">Pipeline</a></li>
	<li id="menu-item-3662444" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3662444"><a href="https://www.merck.com/research/business-development-and-licensing/">Business development and licensing (BD&amp;L)</a></li>
	<li id="menu-item-3624062" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-3624062"><a aria-expanded="false" role="button" href="https://www.merck.com/research/clinical-trials/">Clinical trials</a>
	<ul class="level-2">
		<li id="menu-item-3624063" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3624063"><a href="https://www.merck.com/research/clinical-trials/">Clinical trials overview</a></li>
		<li id="menu-item-666672" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-666672"><a target="_blank" rel="noopener" href="https://www.merckclinicaltrials.com/">Find a trial</a></li>
		<li id="menu-item-2805336" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2805336"><a href="https://www.merck.com/research/clinical-trials/diversity-in-clinical-trials/">Diversity in clinical trials</a></li>
	</ul>
</li>
	<li id="menu-item-3600289" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3600289"><a href="https://www.merck.com/research/rd-locations/">R&#038;D locations</a></li>
	<li id="menu-item-666512" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666512"><a href="https://www.merck.com/research/discovery-development/">How we invent</a></li>
	<li id="menu-item-3636441" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3636441"><a href="https://www.merck.com/research/meet-our-scientists/">Meet our scientists</a></li>
	<li id="menu-item-3650167" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3650167"><a href="https://www.merck.com/research/publications/">Publications</a></li>
</ul>
</li>
<li id="menu-item-3600254" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-3600254"><a aria-expanded="false" role="button" href="https://www.merck.com/products/">Products</a>
<ul class="level-1">
	<li id="menu-item-666506" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666506"><a href="https://www.merck.com/products/">Products list</a></li>
	<li id="menu-item-3607502" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3607502"><a href="https://www.merck.com/products/safety-data-sheets/">Safety data sheets</a></li>
	<li id="menu-item-666515" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666515"><a href="https://www.merck.com/products/patent/">Product patents</a></li>
	<li id="menu-item-3624065" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3624065"><a href="https://www.merck.com/products/distributors/">Merck authorized distributors</a></li>
</ul>
</li>
<li id="menu-item-628574" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-628574"><a aria-expanded="false" role="button" href="https://www.merck.com/patients/">Patients</a>
<ul class="level-1">
	<li id="menu-item-2784133" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-2784133"><a href="https://www.merck.com/patients/">Patients overview</a></li>
	<li id="menu-item-3648543" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3648543"><a href="https://www.merck.com/patients/patient-support-programs/">Patient support programs</a></li>
	<li id="menu-item-3648542" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3648542"><a href="https://www.merck.com/patients/play-an-active-role-in-your-health-care/">Play an active role in your health care</a></li>
	<li id="menu-item-3680564" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3680564"><a href="https://www.merck.com/patients/fighting-counterfeit-medicine/">Fighting counterfeit medicine</a></li>
</ul>
</li>
<li id="menu-item-137022" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-137022"><a aria-expanded="false" role="button" href="https://www.merck.com/investor-relations/">Investors</a>
<ul class="level-1">
	<li id="menu-item-223087" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-223087"><a href="https://www.merck.com/investor-relations/">Investors overview</a></li>
	<li id="menu-item-220674" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-220674"><a href="https://www.merck.com/investor-relations/events-and-presentations/">Events &amp; presentations</a></li>
	<li id="menu-item-220673" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-220673"><a aria-expanded="false" role="button" href="https://www.merck.com/investor-relations/financial-information/">Financial information</a>
	<ul class="level-2">
		<li id="menu-item-666494" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666494"><a href="https://www.merck.com/investor-relations/financial-information/">Financial information overview</a></li>
		<li id="menu-item-666495" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-666495"><a href="https://www.merck.com/investor-relations/financial-information/sec-filings/">SEC filings</a></li>
	</ul>
</li>
	<li id="menu-item-220672" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-220672"><a href="https://www.merck.com/investor-relations/stock-info/">Stock information</a></li>
	<li id="menu-item-220671" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-220671"><a href="https://www.merck.com/investor-relations/investor-resources/">Investor resources</a></li>
</ul>
</li>
<li id="menu-item-3609026" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-3609026"><a aria-expanded="false" role="button" href="https://www.merck.com/media/">Media</a>
<ul class="level-1">
	<li id="menu-item-3609027" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3609027"><a href="https://www.merck.com/media/">Media overview</a></li>
	<li id="menu-item-650878" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-650878"><a href="https://www.merck.com/media/news/">News releases</a></li>
	<li id="menu-item-650884" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-650884"><a href="https://www.merck.com/media/company-statements/">Company statements</a></li>
	<li id="menu-item-3609031" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3609031"><a href="https://www.merck.com/media/media-library/">Media library &amp; contacts</a></li>
	<li id="menu-item-3641978" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-3641978"><a href="https://www.merck.com/media/company-fact-sheet/">Company fact sheet</a></li>
</ul>
</li>
<li id="menu-item-666493" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-666493"><a target="_blank" rel="noopener" href="https://jobs.merck.com/us/en">Careers</a></li>
</ul></nav>

		<div class="side-section">
																				<div class="image">
						<picture>
							<source media="(max-width: 1199px)"
								data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/03/B2-We-are-driven-by-a-shared-purpose-that-is-to_-Invent-for-Life.jpg?resize=370%2C418&#038;quality=70&#038;allow_lossy=1">
							<source media="(min-width: 1200px)"
								data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/03/B2-We-are-driven-by-a-shared-purpose-that-is-to_-Invent-for-Life.jpg?resize=486%2C432&#038;quality=70&#038;allow_lossy=1">
							<img class="lazyload" loading="lazy" data-src="https://www.merck.com/wp-content/uploads/sites/124/2020/03/B2-We-are-driven-by-a-shared-purpose-that-is-to_-Invent-for-Life.jpg?resize=486%2C432&#038;quality=70&#038;allow_lossy=1" alt="Scientist reviewing test tubes">
						</picture>
					</div>
													<div class="tagline"></div>
													<h4>Who we are</h4>
													<a class="btn" href="https://www.merck.com/company-overview/"  title="Learn more" target="">Learn more</a>
									</div>
		<div class="bottom-section">
													<a
				class="btn"
				href="/contact-us/"
				title="Contact us"
				target="_self"
				rel="noopener"
				>Contact us</a>
											</div>
	</div>
</div><!-- #site-menu -->
                <form id="site-search" role="search" method="get" class="search-form" action="https://www.merck.com" autocomplete="off">
	<h2 class="search-header">What can we help you find?</h2>
	<div id="site-search-box" class="input-box">
		<span class="screen-reader-text">Search for:</span>
		<input type="text" class="search-field" placeholder="Search here …" value="" name="s" aria-label="Search site">
		<button type="submit" class="submit search-submit" aria-label="Search"></button>
	</div>
    <div id="search_suggestion_result"></div>
</form>


    <script>
        theme_directory = "https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme";
    </script>

    </header><!-- #masthead -->
    <div id="content" class="site-content">

	<div id="primary" class="content-area">
		<main id="main" class="site-main">

		
<article id="post-3678024" class="post-3678024 page type-page status-publish hentry">

	<div class="entry-content">
		
<div id="mco-b2-hero-block-block_19583be3af7abdc9c92bd939d3457dc5" class="mco-b2-hero-block full mccberg-block">
    <div class="mco-b2-hero-block-wrapper">
        <div class="mco-b2-hero-block-image-section ">

                            <div class="mco-b2-hero-block-image-container ">
                    <picture >
	<source media="(max-width: 767px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?w=768&#038;quality=70&#038;allow_lossy=1" srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?w=768&#038;quality=70&#038;allow_lossy=1" >
<source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?h=768&#038;quality=80&#038;allow_lossy=1" srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?h=768&#038;quality=80&#038;allow_lossy=1" >
<source media="(min-width: 1200px) and (max-width: 1919px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?w=1200&#038;quality=80&#038;allow_lossy=1" srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?w=1200&#038;quality=80&#038;allow_lossy=1" >
<source media="(min-width: 1920px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?w=1920&#038;quality=80&#038;allow_lossy=1" srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?w=1920&#038;quality=80&#038;allow_lossy=1" >
	<img data-src="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Science-Visuals-Infectious-Disea.jpg?w=1920&#038;quality=80&#038;allow_lossy=1" alt="Infectious Disease HIV particles" class="eager " loading="eager" />
</picture>                                    </div>
                        <div class="mco-b2-hero-block-image-container-two">
                            </div>
        </div>

        <div class="mco-b2-hero-block-content-section">
            <nav class="breadcrumbs wrapper text-descriptive"aria-label="Breadcrumbs"><ol class="text-descriptive"><li class="text-descriptive"><a href="https://www.merck.com/research/">Research</a></li> <li aria-hidden="true" class="text-descriptive">&gt;</li> <li class="text-descriptive"><a href="https://www.merck.com/research/infectious-diseases/">Infectious diseases</a></li> <li aria-hidden="true" class="text-descriptive">&gt;</li> <li class="text-descriptive breadcrumb_last" aria-current="page">HIV</li></ol></nav>            
                            <h1>HIV</h1>
            
                            <div class="mco-b2-hero-block-description"><p>We continue to push the boundaries of HIV science because unmet medical need still endures. Ending the HIV epidemic remains our ultimate goal.</p>
</div>
            
                    </div>
    </div>

    
</div>


<div id="mco-title-block-block_76f597d04164018b76f2a45d8f6ad4a6" 
	 class="mco-title-block mccberg-block mt-2 aligncenter" 
	 	 >
	<div class="wrapper">
		<div class="mco-title-block-content">
			
			<h2 class="mco-title-block-title">Advancing research on HIV treatment and prevention</h2>

							<p class="mco-title-block-description"><p>As of 2023, nearly 40 million people worldwide were living with HIV; 1.3 million were diagnosed with HIV that year. The HIV epidemic is far from over, and today, people living with HIV continue to face many challenges. Our HIV research program aims to help address the evolving needs of the individuals living with HIV.</p>
</p>
						
			 
				<div class="mco-title-block-cta-container">

											<a
                            class="btn mco-title-block-cta-btn"
                            href="https://www.merck.com/research/product-pipeline/"
                            title="View our pipeline"
                            target="_self"
                                                    >View our pipeline</a>
					
										
				</div>
					</div>
	</div>
</div>


<h2 class="wp-block-heading">Faces behind our HIV research</h2>


<div id="mco-b5-content-block-block_d24ed5822a83b46bc5340f8f58d9d9bb"
     class="mco-b5-content-block mccberg-block mt-2 negative left">
    <div class="wrapper">
							            <div class="mco-b5-content-block-image-section ">
				                <picture aria-label="Merck HIV researchers">
                                                                        <source media="(max-width: 767px)"
                                    data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=696%2C425&#038;quality=70&#038;allow_lossy=1"
                                    srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=696%2C425&#038;quality=70&#038;allow_lossy=1" />
                                                                                                <source media="(min-width: 768px) and (max-width: 1199px)"
                                    data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=384%2C468&#038;quality=70&#038;allow_lossy=1"
                                    srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=384%2C468&#038;quality=70&#038;allow_lossy=1" />
                                                                                                <source media="(min-width: 1200px)"
                                    data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=750%2C650&#038;quality=70&#038;allow_lossy=1"
                                    srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=750%2C650&#038;quality=70&#038;allow_lossy=1" />
                                                                                                <source media="(min-width: 1600px)"
                                    data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=850%2C744&#038;quality=70&#038;allow_lossy=1"
                                    srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=850%2C744&#038;quality=70&#038;allow_lossy=1" />
                                                                                                <source media="(min-width: 1920px)"
                                    data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=980%2C832&#038;quality=70&#038;allow_lossy=1"
                                    srcset="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=980%2C832&#038;quality=70&#038;allow_lossy=1" />
                                                                                                <img
                                data-src="https://www.merck.com/wp-content/uploads/sites/124/2023/06/HIVLeadImage.jpg?resize=650%2C544&#038;quality=70&#038;allow_lossy=1"
                                alt="Merck HIV researchers"
                                class="lazyload parallax-scroll"
                                loading="lazy"
                            />
                                                            </picture>
				            </div>
		        <div class="mco-b5-content-block-content-section">
			
			                <h3 class="mco-b5-content-block-heading mcc-b5-normal-title">
                    Meet two scientists at the forefront of our HIV research                 </h3 >
			
			                <div class="mco-b5-content-block-description"><p>The field of HIV research has changed drastically in the past 40 years. These two esteemed scientists share their motivations and hopes for the future of HIV research.</p>
</div>
			
                        <div class="mco-b5-content-block-content-buttons-container">
				                    <a class="btn secondary read_more"
                       href="https://www.merck.com/stories/meet-two-scientists-at-the-forefront-of-our-hiv-research/"
                       title="Read more"
                                              target="">Read more</a>
												            </div>
        </div>
    </div>
</div>
<div class="mco-b5-content-block-modal popup" style="display: none;" role="dialog" >
    <div class="popup-wrapper">
        <div class="mco-b5-content-block-modal-content popup-content">
            <button class="mco-b5-content-block-modal-close popup-close" >&times;</button>
            <div class="mco-b5-content-block-modal-video"></div>
        </div>
    </div>
</div>



<h2 class="wp-block-heading">Working together with the HIV community with a goal to end the epidemic</h2>



<p>We’ve been committed to advancing science for the treatment and prevention of HIV since the beginning of the HIV epidemic, but we know it takes all of us to make a difference. Learn more about the vibrant community of people living with HIV, advocates and researchers who are working together to ensure lives aren’t defined by HIV.</p>



<div id="mco-three-column-content-block-block_1a63dbc6d87043e1d04606312807c637"
     class="mco-three-column-content-block mccberg-block mt-2 mb-2 aligncenter mco-three-column-content-block-centered mco-three-column-content-3">

	
    <div class="mco-three-column-content-columns-container">

                <div class="mco-three-column-content-column"
             role="link" data-href="https://www.merck.com/stories/hiv-community-advocates-spark-a-global-conversation/" data-target="" style="cursor: pointer;" title="https://www.merck.com/stories/hiv-community-advocates-spark-a-global-conversation/"        >
                        <div class="mco-three-column-content-col-img-container">
            <div class="mco-three-column-content-col-img">
                <picture>
                    <source media="(max-width: 767px)"
                            data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/10/Merck_GlobalHIVVoices_Advocate-Thumbnail-16x9-UPDATED.png?resize=767%2C469&#038;quality=70&#038;allow_lossy=1">
                    <source media="(min-width: 768px) and (max-width: 1199px)"
                            data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/10/Merck_GlobalHIVVoices_Advocate-Thumbnail-16x9-UPDATED.png?resize=314%2C280&#038;quality=70&#038;allow_lossy=1">
                    <source media="(min-width: 1200px)"
                            data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/10/Merck_GlobalHIVVoices_Advocate-Thumbnail-16x9-UPDATED.png?resize=404%2C268&#038;quality=70&#038;allow_lossy=1">
                    <img
                        data-src="https://www.merck.com/wp-content/uploads/sites/124/2025/10/Merck_GlobalHIVVoices_Advocate-Thumbnail-16x9-UPDATED.png?resize=404%2C268&#038;quality=70&#038;allow_lossy=1"
                        class="lazyload"
                        loading="lazy"
                        alt=""
                            />
                </picture>
            </div>
        </div>

                            <div class="mco-three-column-content-col-content-container">
            
                            <h3>HIV community advocates spark a global conversation</h3>
            
            
                            <div class="mco-three-column-content-col-wysiwyg"><p style="text-align: left">Meet three HIV advocates who are using their stories to uplift, spark change and create spaces of healing and hope across continents. <a href="https://www.merck.com/stories/hiv-community-advocates-spark-a-global-conversation/"><strong>Learn more</strong></a></p>
</div>
                    </div>
                </div>
    
                <div class="mco-three-column-content-column"
                    >
                                <div class="mco-three-column-content-col-content-container">
            
                            <h3> </h3>
            
                            <p class="mco-three-column-content-col-description"> </p>
            
                    </div>
                </div>
    
                <div class="mco-three-column-content-column"
                    >
                                <div class="mco-three-column-content-col-content-container">
            
                            <h3>   </h3>
            
            
                    </div>
                </div>
    

    </div>
</div>



<h2 class="wp-block-heading">A history of HIV research</h2>



<p>Since 1985, Merck has been engaged in research in the treatment of HIV &#8212; having made significant discoveries that changed the way HIV is treated. Today, we continue to conduct research and partner with industry peers to advance potential new treatments for HIV and for its prevention. Learn more about our history.</p>


    <section id="mco-article-slideshow-block_d2f65f1b11714ba60daef483c45d8739" class="mco-article-slideshow full mccberg-block mt-2 mb-2" data-images=9>
        <div class="mco-article-slideshow-container">
            <div class="mco-article-slideshow-image-slider-container">
                <span class="mco-article-slideshow-expand-toggle">
                    <span class="mco-article-slideshow-expand">
                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
    <path fill="#00857C" fill-rule="nonzero" d="M3 7.172v5.656h5.657v2H1V7.172h2zM14.828 1v7.657h-2V3L7.172 3V1h7.656z" />
<title>Resize icon</title></svg>
                    </span>
                    <span class="mco-article-slideshow-close">
                        <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16">
    <path fill="none" fill-rule="evenodd" stroke="#00857C" stroke-linecap="square" stroke-width="2" d="M3 3l10 10m0-10L3 13" />
<title>Close icon</title></svg>
                    </span>
                </span>
                                    <div class="mco-article-slideshow-slider-controls-container mobile-only slider-controls">
                        <div class="btn-previous">
                            <svg class="btn-previous-wrapper" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 17 17">
	<title>Previous</title>
	<path class="btn-previous-meter" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<path class="btn-next-progress" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<image class="btn-previous-icon" x="5" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-left.svg" />
	<image class="btn-previous-icon-hover" x="5" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-left-white.svg" />
</svg>
                        </div>
                        <div class="btn-next">
                            <svg class="btn-next-wrapper" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 17 17">
	<title>Next</title>
	<path class="btn-next-meter" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<path class="btn-next-progress" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<image class="btn-next-icon" x="6" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-right.svg" />
	<image class="btn-next-icon-hover" x="6" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-right-white.svg" />
</svg>
                        </div>
                    </div>
                                <ul class="mco-article-slideshow-image-slider">
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-march-with-banner.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-march-with-banner.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-march-with-banner.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="group of people marching with large fighting for our lives banner"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-scientists-group.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-scientists-group.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-scientists-group.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="Group of scientists"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/06/HIV-1.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/06/HIV-1.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2020/06/HIV-1.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="Merck scientist studies the structure of the HIV-1 protease"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/HIV-protease-team.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/HIV-protease-team.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2021/03/HIV-protease-team.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="Members of the HIV protease research team"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Linda-Distlerath.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Linda-Distlerath.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2025/11/Linda-Distlerath.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="Linda Distlerath sits at desk"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-vial.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-vial.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-vial.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="hiv vial"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-scientists.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-scientists.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-scientists.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="5 Merck HIV scientists"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-quilt.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-quilt.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2021/03/hiv-quilt.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="Large crowd gathered on the National Mall in Washington, D.C."
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                                                    <li>
                            <picture>
                                <source media="(min-width: 768px) and (max-width: 1199px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/Scientists-SSF-Biology.jpg?resize=768&#038;quality=70&#038;allow_lossy=1">
                                <source media="(min-width: 1200px)" data-srcset="https://www.merck.com/wp-content/uploads/sites/124/2021/03/Scientists-SSF-Biology.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1">
                                <img
                                    data-src="https://www.merck.com/wp-content/uploads/sites/124/2021/03/Scientists-SSF-Biology.jpg?resize=1238&#038;quality=80&#038;allow_lossy=1"
                                    alt="two scientists in the lab"
                                    class="lazyload"
                                    loading="lazy"
                                />
                            </picture>
                        </li>
                                    </ul>
            </div>
            <div class="mco-article-slideshow-info-controls">
                                    <div class="mco-article-slideshow-slider-controls">
                        <div class="mco-article-slideshow-slider-nav slider-nav">
                                                            <div class='slider-nav-item active'></div>
                                                            <div class='slider-nav-item '></div>
                                                            <div class='slider-nav-item '></div>
                                                            <div class='slider-nav-item '></div>
                                                            <div class='slider-nav-item '></div>
                                                            <div class='slider-nav-item '></div>
                                                            <div class='slider-nav-item '></div>
                                                            <div class='slider-nav-item '></div>
                                                            <div class='slider-nav-item '></div>
                                                    </div>
                        <div class="mco-article-slideshow-slider-controls-container slider-controls">
                            <div class="btn-previous">
                                <svg class="btn-previous-wrapper" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 17 17">
	<title>Previous</title>
	<path class="btn-previous-meter" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<path class="btn-next-progress" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<image class="btn-previous-icon" x="5" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-left.svg" />
	<image class="btn-previous-icon-hover" x="5" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-left-white.svg" />
</svg>
                            </div>
                            <div class="btn-next">
                                <svg class="btn-next-wrapper" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 17 17">
	<title>Next</title>
	<path class="btn-next-meter" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<path class="btn-next-progress" d="M8.5,16.5a8,8,0,1,1,8-8A8.009,8.009,0,0,1,8.5,16.5Z" />
	<image class="btn-next-icon" x="6" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-right.svg" />
	<image class="btn-next-icon-hover" x="6" y="4" width="6" height="10" xlink:href="/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/arrow-right-white.svg" />
</svg>
                            </div>
                        </div>
                    </div>
                                <div class="mco-article-slideshow-info-slider-container">
                    <ul class="mco-article-slideshow-info-slider">
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">In 1982, the U.S. Centers for Disease Control and Prevention first used the term “AIDS,” or acquired immune deficiency syndrome, to describe the clinical syndrome caused by the human immunodeficiency virus (HIV). </small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">In the mid-1980s, Merck launched its HIV research program in response to what it perceived as a potential epidemic. Our scientists were among the first to discover and develop medicines for the treatment of HIV.</small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">We were the first to publish the crystal structure of HIV protease, which is an enzyme which is essential for virus infectivity.</small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">In 1992, Merck joined other pharmaceutical companies to create the Inter-Company Collaboration for AIDS Drug Development to research HIV treatments. By 1993, we were undertaking the biggest research program in our history, deploying more scientists to investigate AIDS than any other disease and testing tens of thousands of compounds.</small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">The HIV/AIDS community continued to speak out for action.  In 1995, Linda Distlerath, former executive director, Public Policy and Merck Research Laboratories Public Affairs, spent time reading letters sent from thousands of AIDS patients and activists urging Merck to produce a treatment for the disease quickly.</small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">After years of study and development, Merck developed one of the first protease inhibitors. In 1995, prior to FDA approval, in conjunction with the U.S. Food and Drug Administration, patients and HIV advocacy groups, Merck offered a program that made its new HIV treatment available at no cost to selective patients before it was commercially available.</small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">In 1996, the HIV treatment received FDA approval in a record-setting 42 days. It was an important early achievement in making HIV a survivable infection.</small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">In 2012, The NAMES Project Foundation —  with support from Merck — launched the Call My Name national tour to bring attention to the distressing trajectory of the HIV epidemic in Black communities in the U.S. The tour included creating new panels for the AIDS memorial quilt and educational workshops in 10 high-prevalence cities.</small>
                                                                                                        </div>
                            </li>
                                                    <li>
                                <div>
                                                                            <small class="text-descriptive mco-article-slideshow-caption">In 2021, we entered into an agreement with Gilead to work together in the global HIV community in the fight against HIV.</small>
                                                                                                        </div>
                            </li>
                                            </ul>
                </div>
            </div>
        </div>
    </section>



<div style="height:39px" aria-hidden="true" class="wp-block-spacer"></div>
	</div><!-- .entry-content -->

</article><!-- #post-3678024 -->

		</main><!-- #main -->
	</div><!-- #primary -->

</div><!-- #content -->
<div class="related-content-container" id="related-content-main">
    <h2>Related links</h2>
    <div class="related-content-section">
        <div class="related-content-item">
                        <a href="https://www.merck.com/research/" target=""  title="Research">
                                <div class="related-content-item-image-contianer">
                    <picture>
                        <source media="(max-width: 767px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/02/Web-image-2-e1774444008736.png?resize=321%2C196&#038;quality=70&#038;allow_lossy=1">
                        <source media="(min-width: 768px) and (max-width: 1199px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/02/Web-image-2-e1774444008736.png?resize=314%2C280&#038;quality=70&#038;allow_lossy=1">
                        <source media="(min-width: 1200px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2025/02/Web-image-2-e1774444008736.png?resize=404%2C268&#038;quality=70&#038;allow_lossy=1">
                        <img  class="lazyload" loading="lazy" data-src="https://www.merck.com/wp-content/uploads/sites/124/2025/02/Web-image-2-e1774444008736.png?resize=404%2C268&#038;quality=70&#038;allow_lossy=1" alt="scientist working in a lab">
                    </picture>
                </div>
                <div class="related-content-content-container">
                    <p><strong class="heading">Research</p></strong>                    <p class="realted-content-excerpt">We believe research is the will to conquer the impossible and that science will lead the way.</p>
                </div>
                            </a>
                </div>

        <div class="related-content-item">
                        <a href="https://www.merck.com/research/infectious-diseases/" target=""  title="Infectious diseases">
                                <div class="related-content-item-image-contianer">
                    <picture>
                        <source media="(max-width: 767px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/05/infection-disease.jpeg?resize=321%2C196&#038;quality=70&#038;allow_lossy=1">
                        <source media="(min-width: 768px) and (max-width: 1199px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/05/infection-disease.jpeg?resize=314%2C280&#038;quality=70&#038;allow_lossy=1">
                        <source media="(min-width: 1200px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/05/infection-disease.jpeg?resize=404%2C268&#038;quality=70&#038;allow_lossy=1">
                        <img  class="lazyload" loading="lazy" data-src="https://www.merck.com/wp-content/uploads/sites/124/2020/05/infection-disease.jpeg?resize=404%2C268&#038;quality=70&#038;allow_lossy=1" alt="infectious diseases">
                    </picture>
                </div>
                <div class="related-content-content-container">
                    <p><strong class="heading">Infectious diseases</p></strong>                    <p class="realted-content-excerpt">Our focus has always been on the prevention and treatment of diseases that threaten people and communities around the world.</p>
                </div>
                            </a>
                </div>

        <div class="related-content-item">
                        <a href="https://www.merck.com/patients/" target=""  title="Patients ">
                                <div class="related-content-item-image-contianer">
                    <picture>
                        <source media="(max-width: 767px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/06/Patients-People-Older-Couple-GettyImages-949417216_HI_142_high.jpg?resize=321%2C196&#038;quality=70&#038;allow_lossy=1">
                        <source media="(min-width: 768px) and (max-width: 1199px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/06/Patients-People-Older-Couple-GettyImages-949417216_HI_142_high.jpg?resize=314%2C280&#038;quality=70&#038;allow_lossy=1">
                        <source media="(min-width: 1200px)"
                            srcset="https://www.merck.com/wp-content/uploads/sites/124/2020/06/Patients-People-Older-Couple-GettyImages-949417216_HI_142_high.jpg?resize=404%2C268&#038;quality=70&#038;allow_lossy=1">
                        <img  class="lazyload" loading="lazy" data-src="https://www.merck.com/wp-content/uploads/sites/124/2020/06/Patients-People-Older-Couple-GettyImages-949417216_HI_142_high.jpg?resize=404%2C268&#038;quality=70&#038;allow_lossy=1" alt="happy mature couple spending quality time together at home">
                    </picture>
                </div>
                <div class="related-content-content-container">
                    <p><strong class="heading">Patients </p></strong>                    <p class="realted-content-excerpt">We’re here to help you get the information you need to guide you on your health journey.</p>
                </div>
                            </a>
                </div>
    </div>
</div>
<footer id="footerMain" class="footer">
        <div id="footerSocial">
        <div class="wrapper">
            <h3>Connect with us on social</h3>
            <div class="social-icons-rows">
                                    <div class="social-icons-row">
                                                <div class="social-icons">
                                                            <a
                                        href="https://twitter.com/Merck"
                                        target="_blank"
                                        rel="noopener noreferer"
                                        aria-label="Twitter icon "                                >
                                    <img
                                        class="lazyload"
                                        loading="lazy"
                                        data-srcset="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/twitter-brands.svg 1x, https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/twitter-brands.svg 2x"
                                        data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/twitter-brands.svg"
                                        alt="Twitter icon "
                                        aria-label="Twitter icon "                                    />
                                </a>
                                                            <a
                                        href="https://www.facebook.com/MerckInvents"
                                        target="_blank"
                                        rel="noopener noreferer"
                                        aria-label="Facebook icon "                                >
                                    <img
                                        class="lazyload"
                                        loading="lazy"
                                        data-srcset="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/facebook-f-brands.svg 1x, https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/facebook-f-brands.svg 2x"
                                        data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/facebook-f-brands.svg"
                                        alt="Facebook icon "
                                        aria-label="Facebook icon "                                    />
                                </a>
                                                            <a
                                        href="https://www.linkedin.com/company/merck"
                                        target="_blank"
                                        rel="noopener noreferer"
                                        aria-label="Linkedin icon "                                >
                                    <img
                                        class="lazyload"
                                        loading="lazy"
                                        data-srcset="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/linkedin-brands.svg 1x, https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/linkedin-brands.svg 2x"
                                        data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/linkedin-brands.svg"
                                        alt="Linkedin icon "
                                        aria-label="Linkedin icon "                                    />
                                </a>
                                                            <a
                                        href="https://www.instagram.com/merck"
                                        target="_blank"
                                        rel="noopener noreferer"
                                        aria-label="Instagram icon "                                >
                                    <img
                                        class="lazyload"
                                        loading="lazy"
                                        data-srcset="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/instagram-brands.svg 1x, https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/instagram-brands.svg 2x"
                                        data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/instagram-brands.svg"
                                        alt="Instagram icon "
                                        aria-label="Instagram icon "                                    />
                                </a>
                                                            <a
                                        href="https://www.youtube.com/user/Merck"
                                        target="_blank"
                                        rel="noopener noreferer"
                                        aria-label="YouTube icon "                                >
                                    <img
                                        class="lazyload"
                                        loading="lazy"
                                        data-srcset="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/youtube-brands.svg 1x, https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/youtube-brands.svg 2x"
                                        data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/youtube-brands.svg"
                                        alt="YouTube icon "
                                        aria-label="YouTube icon "                                    />
                                </a>
                                                    </div>
                    </div>
                            </div>
        </div>
    </div>
    <div class="wrapper">
            <div id="footerPrograms">
                    <div class="column col-one">
                <input type="checkbox" name ="one" id="columnOne" class="checkbox-toggle" aria-hidden="true" tabindex="-1">
                <label for="columnOne" class="column-header">For patients and health care professionals</label>
                <ul>
                                            <li>
                            <a href="https://www.merckhelps.com/" target="_blank" rel="noopener">MerckHelps</a>
                                                            <br />
                                Merck Patient Assistance Program provides certain Merck medicines and adult vaccines for free to qualified patients.                                                    </li>
                                            <li>
                            <a href="https://www.merckaccessprogram.com/" target="_blank" rel="noopener">Merck Access Program</a>
                                                            <br />
                                Information about insurance coverage and financial assistance options for eligible patients.                                                    </li>
                                            <li>
                            <a href="https://www.merckclinicaltrials.com/" target="_blank" rel="noopener">Clinical trials</a>
                                                            <br />
                                Learn about our clinical trials and find available studies.                                                    </li>
                                            <li>
                            <a href="https://www.merckmanuals.com/" target="_blank" rel="noopener">Merck Manuals</a>
                                                            <br />
                                Medical information source covering thousands of topics in all fields of medicine.                                                    </li>
                                    </ul>
            </div>
                            <div class="column col-two">
                <input type="checkbox" name ="two" id="columnTwo" class="checkbox-toggle" aria-hidden="true" tabindex="-1">
                <label for="columnTwo" class="column-header">Sustainability</label>
                <ul>
                                            <li>
                            <a href="https://www.merck.com/company-overview/sustainability/" target="_blank" rel="noopener">Impact Report</a>
                                                            <br />
                                Reporting on our commitment to operating responsibly to benefit society.                                                    </li>
                                            <li>
                            <a href="https://www.merckformothers.com/" target="_blank" rel="noopener">Merck for Mothers</a>
                                                            <br />
                                An initiative to create a world where no woman has to die giving life.                                                    </li>
                                    </ul>
            </div>
                            <div class="column col-three">
                <input type="checkbox" name ="three" id="columnThree" class="checkbox-toggle" aria-hidden="true" tabindex="-1">
                <label for="columnThree" class="column-header">About Merck</label>
                <ul>
                                            <li>
                            <a href="https://www.merck-animal-health.com/" target="_blank" rel="noopener">Merck Animal Health</a>
                                                            <br />
                                The global animal health business unit of Merck.                                                    </li>
                                            <li>
                            <a href="https://horizonblue.sapphiremrfhub.com/tocs/current/merck-co-inc" target="_blank" rel="noopener">Health Plan - Transparency in Coverage</a>
                                                            <br />
                                In compliance with the Consolidated Appropriations Act, learn more about our health plan’s pricing information.                                                    </li>
                                            <li>
                            <a href="https://www.merck.com/contact-us/" target="_blank" rel="noopener">Contact Us</a>
                                                            <br />
                                If you have a question or need more information about us, find out who you should contact.                                                    </li>
                                    </ul>
            </div>
            </div>
        <div id="footerCopyrightLogos">
    <div id="footerCopyright">
        		<div class="menu-footer-menu-container"><ul id="menuFooter" class="footer-links"><li id="menu-item-674051" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-674051"><a href="https://www.merck.com/forward-looking-statement/">Forward-looking statement</a></li><li id="menu-item-137027" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-137027"><a target="_blank" href="https://www.msdprivacy.com/us/en/cookie-privacy-policy.html">Cookie policy</a></li><li class="menu-item"><button id="menu-item-763862" class="ot-sdk-show-settings menu-item menu-item-type-custom menu-item-object-custom menu-item-763862"><a href="#">Cookie Preferences</a></button></li><li id="menu-item-137025" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-137025"><a target="_blank" href="https://www.msdprivacy.com/us/en/">Privacy</a></li><li id="menu-item-137028" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-137028"><a target="_blank" href="https://www.msdprivacy.com/us/en/transparency-and-privacy.html">Transparency disclosure</a></li><li id="menu-item-669400" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-669400"><a href="https://www.merck.com/terms-of-use/">Terms of use</a></li><li id="menu-item-3374425" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3374425"><a href="https://www.msdaccessibility.com/">Accessibility</a></li><li id="menu-item-669401" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-669401"><a href="https://www.merck.com/sitemap/">Sitemap</a></li><li id="menu-item-3646896" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3646896"><a href="https://www.msdprivacy.com/us/en/chd-policy/">Consumer Health Data Privacy Policy</a></li><li id="menu-item-3646897" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-3646897"><a href="https://dsr.msd.com/DSR/United_States/English/">Your Privacy Choices <svg width="30" height="14" viewBox="0 0 30 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <path d="M22.1 7L24.2 4.8C24.4 4.6 24.4 4.2 24.2 4C24 3.8 23.6 3.8 23.4 4L21.2 6.2L19 4C18.8 3.8 18.4 3.8 18.2 4C18 4.2 18 4.6 18.2 4.8L20.4 7L18.3 9.2C18.1 9.4 18.1 9.8 18.3 10C18.5 10.2 18.9 10.2 19.1 10L21.3 7.8L23.5 10C23.7 10.2 24.1 10.2 24.3 10C24.5 9.8 24.5 9.4 24.3 9.2L22.1 7Z" fill="white"/> <path d="M22.2 0H7C3.1 0 0 3.1 0 7C0 10.9 3.1 14 7 14H22.2C26.1 14 29.2 10.9 29.2 7C29.2 3.1 26 0 22.2 0ZM13.8 12.8H7C3.8 12.8 1.2 10.2 1.2 7C1.2 3.8 3.8 1.2 7 1.2H16.9L13.8 12.8ZM24.3 10C24.1 10.2 23.7 10.2 23.5 10L21.3 7.8L19.1 10C18.9 10.2 18.5 10.2 18.3 10C18.1 9.8 18.1 9.4 18.3 9.2L20.4 7L18.2 4.8C18 4.6 18 4.2 18.2 4C18.4 3.8 18.8 3.8 19 4L21.2 6.2L23.4 4C23.6 3.8 24 3.8 24.2 4C24.4 4.2 24.4 4.6 24.2 4.8L22.1 7L24.3 9.2C24.5 9.4 24.5 9.8 24.3 10Z" fill="#00857C"/> <path d="M12.3 4.1C12.5 4.3 12.6 4.7 12.4 4.9L8.2 9.8C8.1 9.9 8 10 7.9 10C7.7 10.1 7.4 10.1 7.2 9.9L5 7.7C4.8 7.5 4.8 7.1 5 6.9C5.2 6.7 5.6 6.7 5.8 6.9L7.6 8.6L11.4 4.1C11.6 3.9 12 3.9 12.3 4.1Z" fill="#00857C"/> </svg></a></li></ul></div>        <small>
                            Copyright © 2026 Merck &amp; Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved. | This site is intended only for residents of the United States and Canada.                    </small>
    </div>
    <div id="footerLogos">
                            <div id="footerLogosTrusteBadges">
                                    <a href="https://www.essentialaccessibility.com/merck" target="_blank" rel="noopener" class="accessibility" aria-label="Accessibility icon">
                        <img class="lazyload" loading="lazy" data-src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/images/accessibility.png" alt="" data-design-category="accessibility_icon" />
                    </a>
                                                            </div>
            </div>
</div>
    </div>
</footer><!-- #footerMain -->

<div id="fowardGuidanceModel" class="popup" style="display: none;">
    <div class="popup-wrapper">
        <div class="popup-content foward-guide-modal-content">

                            <h3> Forward-Looking Statement of Merck &amp; Co., Inc., Rahway, N.J., USA</h3>
            
            <div class="forward-guidance-content">
                <p>This website of Merck &amp; Co., Inc., Rahway, N.J., USA (the “company”) includes “forward-looking statements” within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. These statements are based upon the current beliefs and expectations of the company’s management and are subject to significant risks and uncertainties. There can be no guarantees with respect to pipeline candidates that the candidates will receive the necessary regulatory approvals or that they will prove to be commercially successful. If underlying assumptions prove inaccurate or risks or uncertainties materialize, actual results may differ materially from those set forth in the forward-looking statements.</p><p>Risks and uncertainties include but are not limited to, general industry conditions and competition; general economic factors, including interest rate and currency exchange rate fluctuations; the impact of pharmaceutical industry regulation and health care legislation in the United States and internationally; global trends toward health care cost containment; technological advances, new products and patents attained by competitors; challenges inherent in new product development, including obtaining regulatory approval; the company’s ability to accurately predict future market conditions; manufacturing difficulties or delays; financial instability of international economies and sovereign risk; dependence on the effectiveness of the company’s patents and other protections for innovative products; and the exposure to litigation, including patent litigation, and/or regulatory actions.</p><p>The company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise. Additional factors that could cause results to differ materially from those described in the forward-looking statements can be found in the company’s Annual Report on Form 10-K for the year ended December 31, 2025 and the company’s other filings with the Securities and Exchange Commission (SEC) available at the SEC’s Internet site (<a class="external-link-with-popup" style="font-family: Invention, sans-serif;font-size: 14px" role="button" href="http://www.sec.gov/" aria-haspopup="true"><span style="font-size: 11pt;line-height: 16.8667px;font-family: Arial, sans-serif;color: #01877c">www.sec.gov</span></a>).</p><p><strong>No Duty to Update</strong></p><p>The information contained in this website was current as of the date presented. The company assumes no duty to update the information to reflect subsequent developments. Consequently, the company will not update the information contained in the website and investors should not rely upon the information as current or accurate after the presentation date. </p>            </div>

            <div class="btn-container text-center">
                <a href="https://www.merck.com/" class="btn tertiary">Decline</a>
                <a href="javascript:void()" class="btn tertiary negative" title="" onclick="sessionStorage.setItem('guidance-accepted', JSON.stringify(true)); document.getElementById('fowardGuidanceModel').style.display = 'none';">Accept</a>
            </div>

        </div>
    </div>
</div>
<script type="text/javascript">
                        /*
* FileSaver.js
* A saveAs() FileSaver implementation.
*
* By Eli Grey, http://eligrey.com
*
* License : https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md (MIT)
* source  : http://purl.eligrey.com/github/FileSaver.js
*/

// The one and only way of getting global scope in all environments
// https://stackoverflow.com/q/3277182/1008999
var _global = typeof window === 'object' && window.window === window
  ? window : typeof self === 'object' && self.self === self
  ? self : typeof global === 'object' && global.global === global
  ? global
  : this

function bom (blob, opts) {
  if (typeof opts === 'undefined') opts = { autoBom: false }
  else if (typeof opts !== 'object') {
    console.warn('Deprecated: Expected third argument to be a object')
    opts = { autoBom: !opts }
  }

  // prepend BOM for UTF-8 XML and text/* types (including HTML)
  // note: your browser will automatically convert UTF-16 U+FEFF to EF BB BF
  if (opts.autoBom && /^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) {
    return new Blob([String.fromCharCode(0xFEFF), blob], { type: blob.type })
  }
  return blob
}

function download (url, name, opts) {
  var xhr = new XMLHttpRequest()
  xhr.open('GET', url)
  xhr.responseType = 'blob'
  xhr.onload = function () {
    saveAs(xhr.response, name, opts)
  }
  xhr.onerror = function () {
    console.error('could not download file')
  }
  xhr.send()
}

function corsEnabled (url) {
  var xhr = new XMLHttpRequest()
  // use sync to avoid popup blocker
  xhr.open('HEAD', url, false)
  try {
    xhr.send()
  } catch (e) {}
  return xhr.status >= 200 && xhr.status <= 299
}

// `a.click()` doesn't work for all browsers (#465)
function click (node) {
  try {
    node.dispatchEvent(new MouseEvent('click'))
  } catch (e) {
    var evt = document.createEvent('MouseEvents')
    evt.initMouseEvent('click', true, true, window, 0, 0, 0, 80,
                          20, false, false, false, false, 0, null)
    node.dispatchEvent(evt)
  }
}

// Detect WebView inside a native macOS app by ruling out all browsers
// We just need to check for 'Safari' because all other browsers (besides Firefox) include that too
// https://www.whatismybrowser.com/guides/the-latest-user-agent/macos
var isMacOSWebView = /Macintosh/.test(navigator.userAgent) && /AppleWebKit/.test(navigator.userAgent) && !/Safari/.test(navigator.userAgent)

var saveAs = _global.saveAs || (
  // probably in some web worker
  (typeof window !== 'object' || window !== _global)
    ? function saveAs () { /* noop */ }

  // Use download attribute first if possible (#193 Lumia mobile) unless this is a macOS WebView
  : ('download' in HTMLAnchorElement.prototype && !isMacOSWebView)
  ? function saveAs (blob, name, opts) {
    var URL = _global.URL || _global.webkitURL
    var a = document.createElement('a')
    name = name || blob.name || 'download'

    a.download = name
    a.rel = 'noopener' // tabnabbing

    // TODO: detect chrome extensions & packaged apps
    // a.target = '_blank'

    if (typeof blob === 'string') {
      // Support regular links
      a.href = blob
      if (a.origin !== location.origin) {
        corsEnabled(a.href)
          ? download(blob, name, opts)
          : click(a, a.target = '_blank')
      } else {
        click(a)
      }
    } else {
      // Support blobs
      a.href = URL.createObjectURL(blob)
      setTimeout(function () { URL.revokeObjectURL(a.href) }, 4E4) // 40s
      setTimeout(function () { click(a) }, 0)
    }
  }

  // Use msSaveOrOpenBlob as a second approach
  : 'msSaveOrOpenBlob' in navigator
  ? function saveAs (blob, name, opts) {
    name = name || blob.name || 'download'

    if (typeof blob === 'string') {
      if (corsEnabled(blob)) {
        download(blob, name, opts)
      } else {
        var a = document.createElement('a')
        a.href = blob
        a.target = '_blank'
        setTimeout(function () { click(a) })
      }
    } else {
      navigator.msSaveOrOpenBlob(bom(blob, opts), name)
    }
  }

  // Fallback to using FileReader and a popup
  : function saveAs (blob, name, opts, popup) {
    // Open a popup immediately do go around popup blocker
    // Mostly only available on user interaction and the fileReader is async so...
    popup = popup || open('', '_blank')
    if (popup) {
      popup.document.title =
      popup.document.body.innerText = 'downloading...'
    }

    if (typeof blob === 'string') return download(blob, name, opts)

    var force = blob.type === 'application/octet-stream'
    var isSafari = /constructor/i.test(_global.HTMLElement) || _global.safari
    var isChromeIOS = /CriOS\/[\d]+/.test(navigator.userAgent)

    if ((isChromeIOS || (force && isSafari) || isMacOSWebView) && typeof FileReader !== 'undefined') {
      // Safari doesn't allow downloading of blob URLs
      var reader = new FileReader()
      reader.onloadend = function () {
        var url = reader.result
        url = isChromeIOS ? url : url.replace(/^data:[^;]*;/, 'data:attachment/file;')
        if (popup) popup.location.href = url
        else location = url
        popup = null // reverse-tabnabbing #460
      }
      reader.readAsDataURL(blob)
    } else {
      var URL = _global.URL || _global.webkitURL
      var url = URL.createObjectURL(blob)
      if (popup) popup.location = url
      else location.href = url
      popup = null // reverse-tabnabbing #460
      setTimeout(function () { URL.revokeObjectURL(url) }, 4E4) // 40s
    }
  }
)

_global.saveAs = saveAs.saveAs = saveAs

if (typeof module !== 'undefined') {
  module.exports = saveAs;
}

/*! ics.js Wed Sept 14 2017 */
var ics=function(e,t){"use strict";{if(!(navigator.userAgent.indexOf("MSIE")>-1&&-1==navigator.userAgent.indexOf("MSIE 10"))){void 0===e&&(e="default"),void 0===t&&(t="Calendar");var r=-1!==navigator.appVersion.indexOf("Win")?"\r\n":"\n",n=[],i=["BEGIN:VCALENDAR","PRODID:"+t,"VERSION:2.0"].join(r),o=r+"END:VCALENDAR",a=["SU","MO","TU","WE","TH","FR","SA"];return{events:function(){return n},calendar:function(){return i+r+n.join(r)+o},addEvent:function(t,i,o,l,u,s){if(void 0===t||void 0===i||void 0===o||void 0===l||void 0===u)return!1;if(s&&!s.rrule){if("YEARLY"!==s.freq&&"MONTHLY"!==s.freq&&"WEEKLY"!==s.freq&&"DAILY"!==s.freq)throw"Recurrence rrule frequency must be provided and be one of the following: 'YEARLY', 'MONTHLY', 'WEEKLY', or 'DAILY'";if(s.until&&isNaN(Date.parse(s.until)))throw"Recurrence rrule 'until' must be a valid date string";if(s.interval&&isNaN(parseInt(s.interval)))throw"Recurrence rrule 'interval' must be an integer";if(s.count&&isNaN(parseInt(s.count)))throw"Recurrence rrule 'count' must be an integer";if(void 0!==s.byday){if("[object Array]"!==Object.prototype.toString.call(s.byday))throw"Recurrence rrule 'byday' must be an array";if(s.byday.length>7)throw"Recurrence rrule 'byday' array must not be longer than the 7 days in a week";s.byday=s.byday.filter(function(e,t){return s.byday.indexOf(e)==t});for(var c in s.byday)if(a.indexOf(s.byday[c])<0)throw"Recurrence rrule 'byday' values must include only the following: 'SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA'"}}var g=new Date(l),d=new Date(u),f=new Date,S=("0000"+g.getFullYear().toString()).slice(-4),E=("00"+(g.getMonth()+1).toString()).slice(-2),v=("00"+g.getDate().toString()).slice(-2),y=("00"+g.getHours().toString()).slice(-2),A=("00"+g.getMinutes().toString()).slice(-2),T=("00"+g.getSeconds().toString()).slice(-2),b=("0000"+d.getFullYear().toString()).slice(-4),D=("00"+(d.getMonth()+1).toString()).slice(-2),N=("00"+d.getDate().toString()).slice(-2),h=("00"+d.getHours().toString()).slice(-2),I=("00"+d.getMinutes().toString()).slice(-2),R=("00"+d.getMinutes().toString()).slice(-2),M=("0000"+f.getFullYear().toString()).slice(-4),w=("00"+(f.getMonth()+1).toString()).slice(-2),L=("00"+f.getDate().toString()).slice(-2),O=("00"+f.getHours().toString()).slice(-2),p=("00"+f.getMinutes().toString()).slice(-2),Y=("00"+f.getMinutes().toString()).slice(-2),U="",V="";y+A+T+h+I+R!=0&&(U="T"+y+A+T,V="T"+h+I+R);var B,C=S+E+v+U,j=b+D+N+V,m=M+w+L+("T"+O+p+Y);if(s)if(s.rrule)B=s.rrule;else{if(B="rrule:FREQ="+s.freq,s.until){var x=new Date(Date.parse(s.until)).toISOString();B+=";UNTIL="+x.substring(0,x.length-13).replace(/[-]/g,"")+"000000Z"}s.interval&&(B+=";INTERVAL="+s.interval),s.count&&(B+=";COUNT="+s.count),s.byday&&s.byday.length>0&&(B+=";BYDAY="+s.byday.join(","))}(new Date).toISOString();var H=["BEGIN:VEVENT","UID:"+n.length+"@"+e,"CLASS:PUBLIC","DESCRIPTION:"+i,"DTSTAMP;VALUE=DATE-TIME:"+m,"DTSTART;VALUE=DATE-TIME:"+C,"DTEND;VALUE=DATE-TIME:"+j,"LOCATION:"+o,"SUMMARY;LANGUAGE=en-us:"+t,"TRANSP:TRANSPARENT","END:VEVENT"];return B&&H.splice(4,0,B),H=H.join(r),n.push(H),H},download:function(e,t){if(n.length<1)return!1;t=void 0!==t?t:".ics",e=void 0!==e?e:"calendar";var a,l=i+r+n.join(r)+o;if(-1===navigator.userAgent.indexOf("MSIE 10"))a=new Blob([l]);else{var u=new BlobBuilder;u.append(l),a=u.getBlob("text/x-vCalendar;charset="+document.characterSet)}return saveAs(a,e+t),l},build:function(){return!(n.length<1)&&i+r+n.join(r)+o}}}console.log("Unsupported Browser")}};


function GenerateICS(title, description, start, end) {
    let cal = new ics();
    cal.addEvent(decodeURIComponent(title), decodeURIComponent(description), "", start, end);
    cal.download(decodeURIComponent(title));
}
</script></div><!-- #page -->
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/*"},{"not":{"href_matches":["\/wp-*.php","\/wp-admin\/*","\/wp-content\/uploads\/sites\/124\/*","\/wp-content\/*","\/wp-content\/plugins\/*","\/wp-content\/themes\/cex-wpvip-mhh-mhh2-mcc-theme\/*","\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<link rel='stylesheet' id='search-form-style-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/search-form.min.css?ver=1764577519' media='all' />
<link rel='stylesheet' id='mcc-hero-block-css-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/hero-block/css/style.min.css?ver=1773234738' media='all' />
<link rel='stylesheet' id='mco-title-block-css-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/title-block/css/style.min.css?ver=1764577519' media='all' />
<link rel='stylesheet' id='b5-content-block-css-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/content-block/css/style.min.css?ver=1776849258' media='all' />
<link rel='stylesheet' id='mco-three-column-content-block-css-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/three-column-content/css/style.min.css?ver=1772198452' media='all' />
<link rel='stylesheet' id='tiny-slider-css-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/tinyslider.min.css?ver=1764577519' media='all' />
<link rel='stylesheet' id='mco-article-slideshow-css-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/f11-article-slideshow/css/style.min.css?ver=1764577519' media='all' />
<link rel='stylesheet' id='related-content-styles-css' href='https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/css/related-content-section.min.css?ver=1764577519' media='all' />
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/js/plugins.min.js?ver=1764577519" id="MCC-plugins-js"></script>
<script id="MCC-scripts-js-extra">
var MCC_scripts_vars = {"format":["F"," ","j",","," ","Y"],"pageIsRtl":"","breakpoints":{"smallA":375,"smallB":374,"mobileA":768,"mobileB":767,"tabletA":1200,"tabletB":1199,"large":1600,"fullHdB":1919,"fullHd":1920,"fourK":2400},"youtubeLink":"https:\/\/www.youtube-nocookie.com"};
</script>
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/js/scripts.min.js?ver=1776849258" id="MCC-scripts-js"></script>
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/js/search_suggestions.min.js?ver=1764577519" id="search_suggestion-js"></script>
<script defer="defer" src="https://unpkg.com/micromodal/dist/micromodal.min.js?ver=6.8.5" id="tiny-modal-js-js"></script>
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/hero-block/js/brightcove.js?ver=1775805992" id="hero-block-brightcove-js-js"></script>
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/hero-block/js/index.js?ver=1768402733" id="mcc-hero-block-js-js"></script>
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/js/tiny-slider.min.js?ver=1764577519" id="new-tiny-slider-js-js"></script>
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/content-block/js/index.js?ver=1768402733" id="mco-b5-content-block-block-js-js"></script>
<script id="mco-article-slideshow-js-js-extra">
var slideshowBlockScript = {"textDirection":"ltr"};
</script>
<script defer="defer" src="https://www.merck.com/wp-content/themes/cex-wpvip-mhh-mhh2-mcc-theme/blocks/mccberg/f11-article-slideshow/js/index.js?ver=1764577519" id="mco-article-slideshow-js-js"></script>

<div id="externalLinkModal" class="popup" style="display: none;">
    <div class="popup-wrapper">
        <div class="popup-content forward-guide-modal-content" role="dialog" aria-labelledby="externalLinkModalTitle">
            <h3 id="externalLinkModalTitle"></h3>

            <div class="forward-guidance-content">
                <p id="externalLinkModalMessage" style="max-width: 31.25rem;"></p>
            </div>

            <div class="btn-container text-center">
                <button class="btn tertiary" id="externalLinkCancelBtn" title=""></button>
                <a href="#" target="_blank" class="btn tertiary negative" id="externalLinkModalBtn" onclick="closeExternalLinkModal()"></a>
            </div>
        </div>
    </div>
</div>

<script>
    var linkedContainers = [].slice.call(document.querySelectorAll('[role="link"]'));
    var anchorLinks = [].slice.call(document.links);
    var documentLinks = linkedContainers.concat(anchorLinks);

    var allowedDomains = ([".local","merck-go-vip","merck-develop.go-vip.co\/merck","merck-preprod.go-vip.co\/merck","vip-msd.com\/merck","merck.com","q4cdn.com","cloudfront.net","wpvip-safety-data-sheets.s3.amazonaws.com","google.com\/calendar","outlook.live.com\/calendar","calendar.yahoo.com","merckhelps.com","merckaccessprogram.com","merckmanuals.com","merckconnect.com","merckclinicaltrials.com","merck-animal-health.com","merckformothers.com","mrknewsroom.com","facebook.com","twitter.com","linkedin.com","mailto:","javascript:","tel:","REGEXP:cts.businesswire.com.*url=http%3A%2F%2Fwww.merck.com","REGEXP:cts.businesswire.com.*url=https%3A%2F%2Fwww.merck.com","REGEXP:protect.checkpoint.com.*___http(s)?:\/www.merck.com","REGEXP:cts.businesswire.com.*url%3Dhttps%253A%252F%252Fwww.merck.com"] || []).filter(function(domain) {
        return stripHttpsWWW(domain) !== stripHttpsWWW(document.location.hostname) && Boolean(domain);
    });
    var configuredExternalLinks = ([{"title":"You are leaving Merck.com","message":"The link you have selected will direct you to a site outside of www.merck.com. We are Merck & Co. Inc., Rahway, NJ, USA known as MSD outside the United States and Canada. ","cancelBtnText":"Cancel","continueBtnText":"Proceed","domains":["*"]}] || []);


    /**
     * This function processes internal links for the Three Column Content Block.
     */
    function makeThreeColumnContentClickable(link, href, target) {
        if (link.role !== 'link' || !href) {
            return;
        }

        link.addEventListener('click', function(e) {

            e.preventDefault();
            e.stopPropagation();
            e.stopImmediatePropagation();

            var win = window.open(href, target);

            if (win) {
                win.focus();
            }
        });
    }

    if (typeof Array.prototype.some !== 'function') {
        Array.prototype.some = function(predicate, thisArg) {
            if (typeof predicate !== 'function') {
                throw TypeError('Array.prototype.some(): predicate must be a function.');
            }

            for (var i = 0; i < this.length; i++) {
                if (predicate.call(thisArg, this[i], i, this)) {
                    return true;
                }
            }

            return false;
        };
    }

    function processLink(link) {

        if (!link || ! ['A', 'DIV'].includes(link.nodeName) || link.classList.contains('external-link-with-popup')) {
            return;
        }

        var href = link.dataset.href || link.href;

        if (!href) {
            return;
        }

        var target = link.dataset.target || link.target || '_self';

        if (shouldAllowDomain(href)) {
            //process internal links
            makeThreeColumnContentClickable(link, href, target);
            return;
        }

        link.addEventListener('click', function(e) {
            e.preventDefault();

            e.stopPropagation();

            e.stopImmediatePropagation();

            var modalData = getExternalLinkContent(href);

            if (!modalData) {
                var win = window.open(href, target);

                if (win) {
                    win.focus();
                }

                return;
            }

            var modal = document.getElementById('externalLinkModal');
            var modalTitle = document.getElementById('externalLinkModalTitle');
            var modalCancelBtn = document.getElementById('externalLinkCancelBtn');
            var modalMessage = document.getElementById('externalLinkModalMessage');
            var modalContinueLink = document.getElementById('externalLinkModalBtn');

            if (link.dataset.src === 'karma-release' && !true) {
                modalData.message = 'This content is not available to residents outside the US and Canada';
                modalData.title = '';
                modalData.cancelBtnText = 'Ok';
                modalContinueLink.style.display = 'none';
            }

            if (modalTitle) {
                modalTitle.textContent = modalData.title;
            }

            if (modalMessage) {
                modalMessage.textContent = modalData.message;
            }

            if (modalCancelBtn) {
                modalCancelBtn.textContent = modalData.cancelBtnText || 'Cancel';
            }

            if (modalContinueLink) {
                modalContinueLink.href = href;
                modalContinueLink.target = target;
                modalContinueLink.textContent = modalData.continueBtnText || 'Proceed';
            }

            if (modal) {
                if (modal.style.display === 'none') {
                    modal.style.display = 'block';
                    modalCancelBtn.focus();
                } else {
                    modal.style.display = 'none';
                }
            }

            // Trap focus within the modal
            modal.addEventListener('keydown', (event) => {
                const focusableElements = [modalCancelBtn, modalContinueLink];
                const firstElement = focusableElements[0];
                const lastElement = focusableElements[1];

                if (event.key === 'Tab') {
                    if (event.shiftKey) { // Shift + Tab
                        if (document.activeElement === firstElement) {
                            lastElement.focus();
                            event.preventDefault();
                        }
                    } else { // Tab
                        if (document.activeElement === lastElement) {
                            firstElement.focus();
                            event.preventDefault();
                        }
                    }
                }
            });

            modalCancelBtn.addEventListener('click', () => {
                closeExternalLinkModal();
                link.focus();
            });
        });
        link.setAttribute('role', 'button');
        link.setAttribute('aria-haspopup', 'true');
        link.classList.add('external-link-with-popup');
    }

    for (var i = 0; i < documentLinks.length; i++) {
        processLink(documentLinks[i]);
    }

    function getExternalLinkContent(link) {
        var wildCardLinks = [];

        for (var i = 0; i < configuredExternalLinks.length; i++) {
            var configuredExternalLink = configuredExternalLinks[i];

            for (var j = 0; j < configuredExternalLink.domains.length; j++) {
                var domain = configuredExternalLink.domains[j];

                if (domain === '*') {
                    wildCardLinks.push(configuredExternalLink);
                }

                if (link.indexOf(domain) !== -1) {
                    return configuredExternalLink;
                }
            }
        }

        if (!wildCardLinks.length) {
            return null;
        }

        return wildCardLinks[0];
    }

    function stripHttpsWWW(link){
        return link.replace(/^(https?:\/\/)?(www\.)?/i, '');
    }

    function shouldAllowDomain(link) {
        //get the domain text without the http or https or www.
        var urlParts = stripHttpsWWW(link).split('/');

        if (!urlParts.length) {
            return false;
        }

        var domain = urlParts[0];
        var currentDomain = stripHttpsWWW(document.location.hostname);

        // Allow if the domain matches the current domain
        if (domain === currentDomain) {
            return true;
        }

        // Check if the domain is in the allowed domains
        if (allowedDomains.some(function(allowedDomain) {

            // Check if it's a protocol (e.g., tel:, mailto:, javascript:)
            if (link.startsWith(allowedDomain)) {
                return true;
            }

            if (allowedDomain.startsWith('REGEXP:')) {
                let allowedDomainRegex = new RegExp(allowedDomain.replace('REGEXP:', ''), 'g');
                if (allowedDomainRegex.test(link)) {
                    return true
                }
            }

            allowedDomain = stripHttpsWWW(allowedDomain);
            return domain === allowedDomain || domain.endsWith(`.${allowedDomain}`);
        })) {
            return true;
        }

        return false;
    }

    function isSubdomain(domain) {
        return domain.split('.').length !== 2;
    }

    function closeExternalLinkModal() {
        var modal = document.getElementById('externalLinkModal');

        if (modal) {
            modal.style.display = 'none';
        }
    }

    try {
        // Switching to MutationObserver to apply External Link feature to dynamic DOM.
        // Options for the observer (which mutations to observe)
        const mcc_el_observer_config = { attributes: false, childList: true, subtree: true };

        // Callback function to execute when mutations are observed
        const pageMutatedHandler = function(mutationsList) {
            for(const mutation of mutationsList) {
                mutation?.addedNodes?.forEach(link => processLink(link));
            }
        };

        // Create an observer instance linked to the callback function
        const mcc_el_observer = new MutationObserver(pageMutatedHandler);

        // Start observing the target node for configured mutations
        mcc_el_observer.observe(document.querySelector('#page'), mcc_el_observer_config);
    } catch(err) {
        console.log(err);
    }

</script>
<div id="ukUserModal" class="popup" style="display: none;">
    <div class="popup-wrapper">
        <div class="popup-content foward-guide-modal-content">

            <h3></h3>

            <div class="forward-guidance-content">
                <p style="max-width: 31.25rem;"></p>
            </div>

            <div class="btn-container text-center">
                <a target="_blank" class="btn tertiary negative" id="externalLinkModalBtn" onclick="AcceptUKMessage();">
                                    </a>
            </div>

        </div>
    </div>
</div>

<script type="text/javascript">
    function AcceptUKMessage() {
        try {
            let accepted = {
                expire: new Date(new Date().getTime() + 60 * 60 * 24 * 1000)
            };
            sessionStorage.setItem('uk-messaging', JSON.stringify(accepted));
            document.getElementById('ukUserModal').style.display = 'none';
        } catch (ex) {
            console.log(ex);
        }
    }
</script>



<script>
    removeTopBorderFromSeparatorBlock();

    function removeTopBorderFromSeparatorBlock() {
        let separatorBlock = document.querySelectorAll('.wp-block-separator.is-style-wide');
        for (let i = 0; i < separatorBlock.length; i++) {
            separatorBlock[i].style.borderTop = '0px';
        }
    }
    // Set the offset when entering page with hash present in the url
    document.addEventListener('DOMContentLoaded', (e) => {
        if (location.hash.length !== 0) {
            accordionFocus();
        }

        function accordionFocus() {
            const URL = window.location.href;
            const splittedURL = URL.split('/');
            //accordion id should be at the end
            const possibleAccordionID = splittedURL[splittedURL.length - 1];
            const RegExp = /#[a-zA-Z-\d]+/gi;
            const foundAccordionMatch = RegExp.test(possibleAccordionID);
            //Check if param was found
            if (foundAccordionMatch) {
                setTimeout(function() {
                    let accordionName = possibleAccordionID.match(RegExp).toString();
                    const accordionId = accordionName.replace('#', '');
                    let accordionControl = document.getElementById(accordionId);

                    if (accordionControl && accordionControl.closest('.b6-accordion-list-item-details')) {
                        allA6Tabs = document.querySelectorAll('.mccberg-tab-content');
                        if(allA6Tabs.length > 0){
                            openA6tab(allA6Tabs, accordionControl)
                        }
                        //get the element closest to the collapse handle
                        let accordionDetail = accordionControl.closest('.b6-accordion-list-item-details')
                        accordionDetail.setAttribute('open', " ");
                        accordionDetail.scrollIntoView();
                    }
                }, 500);
            }
        }

    });

    function openA6tab(allA6Tabs, accordionControl)
    {
    //close all A6tabs and Title
    allA6TabsTitle = document.querySelectorAll('.mccberg-tab-title');
    for (let i = 0; i < allA6Tabs.length; i++) {
        allA6Tabs[i].classList.remove('open');
        allA6TabsTitle[i].classList.remove('open');
    }
    let accordionDetailA6 = accordionControl.closest('.mccberg-tab-content')

    // Assuming accordionDetailA6 is the element you are working with
    let matchedClass = Array.from(accordionDetailA6.classList).find(className => 
    className.startsWith('mccberg-tab-content-')
    );
    // Extract the number at the end of the matched class
    let indexNumber = matchedClass ? matchedClass.split('-').pop() : null;

    // Output the number
    allA6TabsTitle[indexNumber-1].classList.add('open')
    accordionDetailA6.classList.add('open');
    }
    function idLinkScrollFix(hash) {
        setTimeout(function() {

            var one_trust_cookie_panel = document.getElementById("onetrust-banner-sdk");
            let wp_admin_bar = document.getElementById('wpadminbar');
            let admin_bar_offset_height = wp_admin_bar ? wp_admin_bar.offsetHeight : 0;
            let cookie_present = one_trust_cookie_panel && !one_trust_cookie_panel.style.visibility;
            let cookie_gone = one_trust_cookie_panel && one_trust_cookie_panel.style.visibility === 'hidden';
            let cookie_height = cookie_present && !cookie_gone ? one_trust_cookie_panel.offsetHeight : 0;
            let mastheadElement = document.getElementById('masthead');
            let masthead = mastheadElement ? mastheadElement.offsetHeight : 0;
            let brand_headerElement = document.getElementsByClassName('brand-header')[0];
            let brand_header = brand_headerElement ? brand_headerElement.offsetHeight : 0;
            let height_to_adjust = admin_bar_offset_height + masthead + brand_header + cookie_height + 16;
            let el_to_scroll_to = document.getElementById(hash.replace("#", ''));
            if (el_to_scroll_to) {
                let position = el_to_scroll_to.getBoundingClientRect();
                window.scrollTo(position.left, position.top - height_to_adjust + window.scrollY);
            }
        }, 500);
    }
</script>
</body>

</html>
