1. NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
2. The Sierra Leone Ministry of Defense, Freetown, Sierra Leone
3. World Health Organization, Geneva, Switzerland
4. Viral Special Pathogens Branch, Centers for Disease Control and Prevention, Atlanta, Georgia
5. The Sierra Leone Ministry of Health and Sanitation, Freetown, Sierra Leone