Swati B. Avashia*† , Jeannine M. Petersen‡, Connie M. Lindley§, Martin E. Schriefer‡, Kenneth L. Gage‡, Marty Cetron*, Thomas A. DeMarcus*, David K. Kim*, Jan Buck§, John A. Montenieri‡, Jennifer L. Lowell‡, Michael F. Antolin¶, Michael Y. Kosoy‡, Leon G. Carter‡, May C. Chu‡, Katherine A. Hendricks†, David T. Dennis‡, and Jacob L. Kool‡

Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †Texas Department of Health, Austin, Texas, USA; ‡Centers for Disease Control and Prevention, Fort Collins, Colorado, USA; §Texas Department of Health, Arlington, Texas, USA; ¶Colorado State University, Fort Collins, Colorado, USA