1. Georgetown University, Washington, DC;
2. Global Disease Detection Branch, Division of Global Health Protection, Center for Global Health, US Centers for Disease Control and Prevention (CDC), Nairobi, Kenya;
3. Kenya Medical Research Institute-Centre for Global Health Research (KEMRI-CGHR), Nairobi, Kenya;
4. National Institute of Medical Research (NIMR), Muhimbili Research Centre, Salaam, Tanzania;
5. Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, Virginia