1. From Moderna, Cambridge, MA (E.W., J.G., R. Dhar, L.W., J.D., P.G., A.K., L.L., S.M., R.M., C.A.P., A.K.S., B.J.K., F.S., W.H., C.R., K.S., S.K.S., C.A.S., J.M.M., R. Das, G.L.C.); Johns Hopkins Bloomberg School of Public Health, Baltimore (A.H.B.); Fundación Respirar–Vaccine Research Division (P.A.D.) and Hospital Militar Central Cirujano Mayor Dr. Cosme Argerich (G.P.-M.) — both in Buenos Aires; International Center for Diarrheal Disease Research, Dhaka, Bangladesh (K.Z.); Clinical Site Partners,...