Johns Hopkins University - Department of International Health, Johns Hopkins University - Department of International Health, Johns Hopkins University - Department of International Health, Projahnmo Research Foundation, Projahnmo Research Foundation, University of Mississippi Medical Center - Department of Microbiology and Immunology, Child Health Research Foundation, Projahnmo Research Foundation, Projahnmo Research Foundation, Projahnmo Research Foundation, Johns Hopkins University - Department of International Health, Johns Hopkins University - Department of International Health, Johns Hopkins University - Department of International Health, Johns Hopkins University - Division of Pulmonary and Critical Care Medicine, Child Health Research Foundation, International Centre for Diarrheal Disease Research (icddr,b), Johns Hopkins University - Department of International Health, Johns Hopkins University - Department of International Health, Johns Hopkins University - Department of International Health, International Centre for Diarrheal Disease Research (icddr,b) and Independent