Dr. Audrey Pettifor, Professor and Associate Chair in the Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina is a social epidemiologist whose research focuses on sexual behavior and determinants of HIV/STI infection with a particular focus on adolescents and social determinants of health. Dr Pettifor has expertise in sexual behavior, HIV prevention, HIV testing, structural interventions and cash transfers for HIV prevention and has published extensively in the areas of HIV prevention and care among young people in sub-Saharan Africa.