Mark Dybul, executive director of the Global Fund to Fight AIDS, Tuberculosis and Malaria

Mark Dybul is executive director of the Global Fund to Fight AIDS, Tuberculosis and Malaria. He trained in Georgetown and had his residency in Chicago. In the 1980s he witnessed the emergence of the AIDS epidemic in San Francisco, which inspired his academic career in HIV research. In 2006, President George W Bush appointed him leader of the President’s Emergency Plan for AIDS Relief (PEPFAR), the world’s largest scale global health intervention by any one country. In 2012, he joined the Global Fund, which allocates $4bn (£2.8bn; €3.5bn) of public and private funding a year to programmes run by local experts to fight these diseases. By the end of 2016 it is predicted that the Global Fund will have helped save 22 million lives.