1. Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina;
2. Institut National de Recherche Biomédicale, Kinshasa, Democratic Republic of the Congo;
3. Department of Microbiology and Immunology, University of North Carolina School of Medicine, Chapel Hill, North Carolina;
4. Department of Medicine, Division of Infectious Diseases, Hope Clinic of the Emory Vaccine Center, Emory School of Medicine, Decatur, Georgia;
5. Ecole de Santé Publique, Faculté de Médecine, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
6. Department of Medicine, Division of Infectious Diseases, University of North Carolina School of Medicine, Chapel Hill, North Carolina;
7. Department of Geography, University of North Carolina, Chapel Hill, North Carolina;