Combination HIV prevention

Michael Merson a, Nancy Padian b, Thomas J Coates c, Geeta Rao Gupta d, Stefano M Bertozzi e, Peter Piot f, Purnima Mane i, Michael Bartos f , for the Lancet HIV Prevention Series authors g h Although we applaud David Wilson and Daniel Halperin's endorsement of the UNAIDS call to “know your epidemic and response” (Aug 9, p 423),1 they seem to imply an unfortunate narrowing of HIV prevention to just one or two stand-alone “interventions”. The real world of HIV programming is not so simple.