1. Center for International Health, Education, and Biosecurity, University of Maryland School of Medicine, Baltimore, Maryland, USA.
2. Department of Infectious Diseases, University of Maryland School of Medicine, Baltimore, Maryland, USA.
3. Division of Infectious Diseases, Department of Medicine, University of Zambia School of Medicine, Lusaka, Zambia.
4. Department of Infectious Disease, Adult Infectious Diseases Center, University Teaching Hospital, Lusaka, Zambia.
5. Zambia National Public Health Institute, Lusaka, Zambia.
6. Ministry of Health, Ndeke House, Lusaka, Zambia.