Researcher, particularly on AIDS. 1996-2001, Department Head, UN AIDS, Geneva. 2001-03, Minister of Health of Senegal. 2004-12, Executive Director, Roll Back Malaria, founded in 1998 by the World Health Organization, United Nations Development Programme, UNICEF and the World Bank to halve the burden of malaria-related morbidity. Currently, Minister of Health and Social Action of Senegal. Author of numerous publications on AIDS.