London School Of Hygiene And Tropical Medicine: New Director And The Global Health Agenda Professor Peter Piot, incoming Director of the London School of Hygiene and Tropical Medicine, talks about tackling the world's health challenges and delivering good health for all. From his perspective as a leader in the global fight against AIDS, former Director of UNAIDS, research scientist working in several African countries, co-discoverer of the Ebola virus, and Under-Secretary General of the United Nations, he talks about the importance to him of joining the London School.