1. From the Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle (L.C., T.B.); Johns Hopkins Bloomberg School of Public Health, Baltimore (C.B.), the Center for Infectious Disease Research (N.L.M.) and the U.S. Military HIV Research Program (M.R.), Walter Reed Army Institute of Research, Silver Spring, and the Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda (M.R.) — all in Maryland; and the Institute for Global Health and Infectious Diseases...