1. Division of Pediatric Infectious Diseases, Department of Pediatrics, University of California San Francisco, San Francisco, California;
2. Global Disease Detection Center, Thailand Ministry of Public Health (MOPH)–United States Centers for Disease Control and Prevention (CDC) Collaboration, Nonthaburi, Thailand;
3. Nakhon Phanom General Hospital, Nakhon Phanom, Thailand;
4. Division of Global Health Protection, Center for Global Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia