1. Office of Epidemiology and Research, Puerto Rico Department of Health, San Juan
2. Epidemic Intelligence Service, Division of Scientific Education and Professional Development, US Centers for Disease Control and Prevention, Atlanta, Georgia
3. Division of Vector-Borne Diseases, National Center for Emerging and Zoonotic Infectious Diseases, US Centers for Disease Control and Prevention, Atlanta, Georgia
4. Office for State, Tribal, Local, and Territorial Support, US Centers for Disease Control and Prevention, Atlanta, Georgia
5. Biological and Chemical Emergencies Laboratory, Office of Public Health Preparedness and Response, Puerto Rico Department of Health, San Juan
6. Public Health Laboratory, Puerto Rico Department of Health, San Juan
7. Hospital Interamericano de Medicina Avanzada–San Pablo, Caguas, Puerto Rico
8. Division of State and Local Readiness, Office of Public Health Preparedness and Response, US Centers for Disease Control and Prevention, Atlanta, Georgia
9. Commissioned Corps of the US Public Health Service, Rockville, Maryland
10. Division of High Consequence Pathogens and Pathology, National Center for Emerging and Zoonotic Infectious Diseases, US Centers for Disease Control and Prevention, Atlanta, Georgia
11. Neurology Section, University of Puerto Rico School of Medicine, San Juan