Quarraisha Abdool Karim is Professor of Clinical Epidemiology at Columbia University Mailman School of Public Health and Associate Scientific Director of CAPRISA. Her work focuses on HIV prevention, especially among adolescent girls and young women in South Africa, and on strategies to expand treatment in resource-constrained settings. She led the landmark CAPRISA 004 trial, which showed that antiretrovirals could prevent the sexual transmission of HIV and helped lay the foundation for PrEP. Current President of The World Academy of Sciences and elected Fellow of the Royal Society. 2025 Virchow Prize, 2024 Lasker-Bloomberg Award; Hideyo Naguchi Award, L'Oreal-UNESCO Women in Science Laureate and John Dirks-Gairdner for her contributions to global health and women's health.