Affiliation: | Centers for Disease Control and Prevention, Atlanta, Georgia, USA (N.M. Lewis, L.M. Duca, P. Marcenac, E.A. Dietrich, C.J. Gregory, V.L. Fields, M.M. Banks, J.R. Rispens, A. Hall, J.L. Harcourt, A. Tamin, J.E. Tate, S. Nabity, A.M. Matanock, H.L. Kirking);Utah Department of Health, Salt Lake City, Utah, USA (N.M. Lewis, K. Christensen, A.C. Dunn);Davis County Health Department, Clearfield, Utah, USA (S. Willardson);Salt Lake County Health Department, Salt Lake City (T. Kiphibane) |