Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Liverpool School of Tropical Medicine, Liverpool School of Tropical Medicine, London School of Hygiene & Tropical Medicine - Department of Clinical Research, Government of the United States of America - Centers for Disease Control and Prevention (CDC), Government of the United States of America - Centers for Disease Control and Prevention (CDC), Government of the United States of America - Centers for Disease Control and Prevention (CDC) and Kenya Medical Research Institute (KEMRI)