1. From the Centers for Disease Control and Prevention COVID-19 Response Team, Atlanta (M.G.T., C.H.B., S. Reynolds, J.F., P.P., E.P.G., R.M.P., L.B., A.S., N.O., S.J.S., J.R.V., A.F., E.A.-B.); the Division of Infectious Diseases and Clinical Epidemiology, Intermountain Healthcare, Salt Lake City (E.S., K.D., N.G., J.A.); the Center for Biomedical Informatics, Regenstrief Institute (S.G., B.E.D., W.F.F., N.R.V.), Indiana University School of Medicine (S.G.), and Indiana University Richard M. Fairbanks...