1. From the Centre for the AIDS Programme of Research in South Africa (CAPRISA), University of KwaZulu-Natal, Durban (S.S.A.K.); the Department of Epidemiology, Mailman School of Public Health, Columbia University (S.S.A.K.), and Weill Cornell Medicine (H.E.V., J.W.P.) — both in New York; Paris (F.B.-S.); Makerere University School of Public Health, Kampala, and Rakai Health Sciences Program, Kalisizo — both in Uganda (D.S.); the Centre for Microbiology Research, Kenya Medical Research Institute, Nairobi (E...