1. Charles Alpren and Amanda Burrage are with the Epidemic Intelligence Service, Division of Scientific Education and Professional Development, Center for Surveillance, Epidemiology, and Laboratory Services, Centers for Disease Control and Prevention (CDC), Atlanta, GA. Philip J. Peters, Sheryl B. Lyss, William M. Switzer, Ashley Murray, Christine Agnew-Brune, Erica L. Dawson, Nivedha Panneer, Paul McClung, Ellsworth M. Campbell, Sharoda Dasgupta, Kischa Hampton, William Adih, Susie P. Danner, Hongwei Jia,...