1. Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
2. Centre for Communicable Disease Dynamics, Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
3. Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA.
4. Wharton Statistics, University of Pennsylvania, Philadelphia, PA 19104, USA.
5. Medical Research Council Unit The Gambia at London School of Hygiene and Tropical Medicine, P.O. Box 273, Banjul, The Gambia.
6. Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
7. Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA.
8. Howard Hughes Medical Institute, Chevy Chase, MD 20815, USA.
9. Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02120, USA.