--- title: World's First Viable Malaria Vaccine Shows Success in Trials description: Malaria is present in over 100 countries and threatens half of the world's population canonical: https://time.com/3834224/malaria-vaccine-trials/ author: Naina Bajekal article:opinion: false article:content_tier: free article:published_time: 2015-04-24T12:32:29.000Z article:modified_time: 2026-02-22T06:39:05.530Z article:section: Health og:title: World's First Viable Malaria Vaccine Shows Success in Trials og:description: Malaria is present in over 100 countries and threatens half of the world's population og:url: https://time.com/3834224/malaria-vaccine-trials/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production og:image:width: 1200 og:image:height: 675 og:image:alt: TIME og:type: article twitter:card: summary_large_image twitter:title: World's First Viable Malaria Vaccine Shows Success in Trials twitter:description: Malaria is present in over 100 countries and threatens half of the world's population twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/bltde093bcdab65f2d0/6988d9b9bc6cfc69913e2a3c/time-logo.jpg?branch=production --- # World's First Viable Malaria Vaccine Shows Success in Trials > Sponsored content. 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Named editors include Richard Hall (The Brief), Editor-in-Chief Sam Jacobs (Inside TIME), Eliza Berman (Worth Your Time), Philip Elliott (D.C. Brief), Justin Worland (Future Proof) and Harry Booth (In the Loop). Health Matters is written by TIME's health desk. #### How do I sign up for a TIME newsletter? Go to time.com/newsletters, choose the newsletters you want and enter your email address. There is no cost and no subscription requirement. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-network-2026q3/newsletters?i=bccd845b-ebac-471f-bca0-a7bf9f956894&cr=time-nl-network-2026q3-v1)  by [Naina Bajekal](https://time.com/author/naina-bajekal/)  ## Naina Bajekal Bajekal was executive editor and international editor at TIME. Apr 24, 2015 12:32 PM UTC  by [Naina Bajekal](https://time.com/author/naina-bajekal/)  ## Naina Bajekal Bajekal was executive editor and international editor at TIME. Apr 24, 2015 12:32 PM UTC The results of final clinical trials of the first viable malaria vaccine show it offers partial protection against malaria for up to four years. The vaccine is called RTS,S and has been developed over two decades by GlaxoSmithKline and a non-profit organization funded by the Bill & Melinda Gates Foundation. It is designed for children in African countries and if approved by international regulators, like the World Health Organization, it could be made available for use in Africa from October. However, early trial data from 2011 and 2012 – carried out on 16,000 children from seven African countries – showed that vaccines in babies aged 5 – 17 months were only effective in 46% of children, diminishing hopes that RTS,S would be effective. But final data published in [_The Lancet_](http://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2815%2960721-8/abstract)journal Friday showed that the vaccinated children were still protected four years later, and that protection rates were improved with booster shots. Malaria currently kills more than 660,000 people a year, and some 1,300 children in sub-Saharan Africa [die](http://www.dndi.org/diseases-projects/diseases/malaria.html) every day from the parasitic disease – nearly one child every minute. Although the RTS,S vaccine is only partially effective, it marks a scientific milestone as the first to reach advanced clinical trials with some success. _\[_[_Reuters_](http://www.reuters.com/article/2015/04/24/us-health-malaria-vaccine-idUSKBN0NE2TY20150424)_\]_ ```json [{"@context":"https://schema.org","@type":"NewsArticle","@id":"https://time.com/3834224/malaria-vaccine-trials/","mainEntityOfPage":{"@type":"WebPage","@id":"https://time.com/3834224/malaria-vaccine-trials/"},"headline":"World's First Viable Malaria Vaccine Shows Success in Trials","datePublished":"2015-04-24T12:32:29.000Z","dateModified":"2026-02-22T06:39:05.530Z","description":"Malaria is present in over 100 countries and threatens half of the world's population","url":"https://time.com/3834224/malaria-vaccine-trials/","keywords":["Malaria"],"thumbnailUrl":"","author":[{"@type":"Person","name":"Naina Bajekal","jobTitle":"Bajekal was executive editor and international editor at TIME.","url":"https://time.com/author/naina-bajekal/"}],"articleSection":"Health","image":[],"publisher":{"@type":"Organization","name":"Time","url":"https://time.com/","logo":{"@type":"ImageObject","url":"https://time.com/images/logo.png","width":528,"height":156},"foundingDate":"March 3, 1923","sameAs":["https://www.facebook.com/time","https://www.instagram.com/time/?hl=en","https://twitter.com/time","https://www.pinterest.com/timemagazine"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/section/health/","name":"Health"}},{"@type":"ListItem","position":2,"item":{"@id":"/tag/malaria/","name":"Malaria"}},{"@type":"ListItem","position":3,"item":{"@id":"https://time.com/3834224/malaria-vaccine-trials/","name":"World's First Viable Malaria Vaccine Shows Success in Trials"}}]}] ```