Audrey Pettifor is Professor of Epidemiology at the University of North Carolina at Chapel Hill and Faculty Fellow of the Carolina Population Center. She is an epidemiologist whose research focuses on structural determinants of HIV/STI infection in sub-Saharan Africa particularly in among adolescents and young women. Dr Pettifor has expertise on sexual behavior, HIV prevention, HIV testing, and structural interventions among adolescents and young adults in sub-Saharan Africa and has published extensively in the area of HIV and sexual behavior among youth in sub-Saharan Africa. She is co-chair the HPTN adolescent science committee and has published over 100 articles in peer reviewed journals, primarily on HIV in sub-Saharan Africa.