1. Department of Pathology, Johns Hopkins School of Medicine, Baltimore, Maryland;
2. National Institute for Medical Research, Kilosa, Tanzania;
3. Dana Center for Preventive Ophthalmology, Johns Hopkins School of Medicine, Baltimore, Maryland;
4. Francis I Proctor Foundation, University of California San Francisco, San Francisco, California;
5. Infectious Disease Clinical Research Program, Uniformed University of the Health Sciences, Bethesda, Maryland
6. Department of Microbiology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania;