1. Centers for Disease Control and Prevention, Atlanta, Georgia, USA
2. European Program for Intervention Epidemiology Training (EPIET), European Union, Saint-Maurice, France; EPICENTRE, Paris, France
3. Kenya Ministry of Health, Nairobi, Kenya
4. Kenyan Medical Research Institute, Nairobi, Kenya
5. National Institutes of Virology (NIV), Sandringham, South Africa
6. World Health Organization, African Regional Office, Harare, Zimbabwe
7. Médècins Sans Frontieres, Paris, France
8. United States Army Medical Research Unit, Kenya