David Wilson is the World Bank's Global AIDS Program Director and was previously the Bank's Lead HIV Specialist. His work on HIV/AIDS spans almost 25 years. During his career he has worked as a scientist and program manager in more than 50 countries and has published approximately 100 scientific papers. His interests lie in HIV epidemiology, HIV prevention science and program evaluation. He has developed prevention programs that have been recognized as best practice by the World Bank, WHO and DFID, and have been influential in international HIV prevention science. In addition, he has served as technical consultant and adviser to many international agencies, including USAID, DFID, EU, AUSAID, SIDA, NORAD, UNAIDS, UNICEF and WHO.