1. Global Disease Detection Regional Center, U.S. Naval Medical Research Unit No. 3, Cairo, Egypt.
2. Viral and Rickettsial Diseases Department, Naval Medical Research Center, Silver Spring, Maryland.
3. Global Disease Detection Branch, Division of Global Health Protection, Center for Global Health, U.S. Centers for Disease Control and Prevention, Atlanta, Georgia.
4. Biological Defense Research Directorate, Naval Medical Research Center, Silver Spring, Maryland.
5. Vector Biology Research Program, U.S. Naval Medical Research Unit No. 3, Cairo, Egypt.
6. Department of Epidemiology and Health Information, Ministry of Health, Djibouti, Djibouti.