1. From the Global Immunization Division (R.M.C., J.B.H., M.G.D., G.U., G.P., T.B.H.) and the Epidemic Intelligence Service (R.M.C.), Centers for Disease Control and Prevention (CDC), Atlanta; Institut National de Recherche Biomédicale (S.A.-M., P.M.N., G.M.K., J.-J.M.-T.), Division of Global Health Protection (A.S.G.), Division of Global HIV and Tuberculosis (R.E.), CDC, and Programme Elargi de Vaccination, Ministère de la Santé (G.K.M.S.) — all in Kinshasa, Democratic Republic of Congo; and the Division...