1. Department of Medicine, Duke University School of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
2. Duke Human Vaccine Institute, Durham, NC 27710, USA.
3. Departments of Medicine and Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
4. Laboratory of Molecular Medicine, Boston Children’s Hospital, Harvard Medical School, Boston, MA 02115, USA.
5. Department of Chemical Biology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
6. Department of Surgery, Duke University School of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
7. Vaccine Research Center, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
8. Department of Immunology, Duke University School of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
9. National Institute for Communicable Diseases, Johannesburg 2131, South Africa.
10. Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
11. Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
12. University of North Carolina Project, Kamuzu Central Hospital, Lilongwe, Malawi.
13. Departments of Medicine, Epidemiology, and Microbiology and Immunology, University of North Carolina, Chapel Hill, NC 27599, USA.
14. Department of Microbiology and Department of Mathematics and Statistics, Boston University, Boston, MA 02215, USA.
15. Department of Pediatrics, Duke University School of Medicine, Duke University Medical Center, Durham, NC 27710, USA.