1. Centers for Disease Control and Prevention, Atlanta, GA 30329, USA.
2. U.S. Army Medical Research Institute of Infectious Diseases, Fort Detrick, Frederick, MD 21702, USA.
3. Ministry of Health, Monrovia, Liberia.
4. Illumina Inc., San Diego, CA 92122, USA.
5. Liberian Institute for Biomedical Research, Charlesville, Liberia.
6. Naval Medical Research Unit No. 3, U.S. Navy, Cairo, Egypt.
7. Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Fort Detrick, Frederick, MD 21702, USA.
8. World Health Organization, CH-1211 Geneva 27, Switzerland.
9. Institute of Evolutionary Biology, University of Edinburgh, Edinburgh EH9 3FL, UK.
10. Fogarty International Center, National Institutes of Health, Bethesda, MD 20892, USA.
11. Centre for Immunology, Infection and Evolution, University of Edinburgh, Edinburgh EH9 3FL, UK.