1. From Public Health–Seattle and King County (T.M.M., S.C., S.P., M.K., J.L., A.B., V.K., M.D.L., J.F., C.B.-S., J.S.D.), University of Washington, Seattle (T.D.R., M.R.S., J.S.D.), EvergreenHealth, Kirkland (F.X.R.), Washington State Public Health Laboratory, Shoreline (D.R., B.H.), and Washington State Department of Health, Tumwater (P.M.) — all in Washington; and the Epidemic Intelligence Service (T.M.M., D.W.C., N.G.S., E.J.C., F.T., A.C.B., L.P.O.), COVID-19 Emergency Response (T.M.M., D.W.C., N.G.S.,...