Professor Quarraisha Abdool Karim is one of the world’s leading AIDS researchers and has made pioneering contributions to understanding the HIV epidemic in young people, especially among young women. She joined us for a two-part series to explain her latest research into epidemic hot spots in KwaZulu-Natal in South Africa, focusing on both the structural and biological risk factors that facilitate the spread of HIV in young women. In Part 1, she discusses the social and economic factors that contribute to the dramatic differences in HIV rates in women and men at different ages. Hosted by Janet Fleischman. Produced by Alex Bush. Edited by Ribka Gemilangsari.