Peter Piot has been Executive Director of UNAIDS since 1995. He has a distinguished academic and scientific career, focusing on AIDS and women's health in the developing countries. Dr. Piot was a professor of microbiology and of public health at the Institute of Tropical Medicine in Antwerp and the Universities of Nairobi, Brussels and Lausanne. In 1992, he joined the WHO Global Programme on AIDS. After graduating from medical school, he co-discovered the Ebola virus in the Democratic Republic of the Congo (formerly Zaire) in 1976.