University of Barcelona - Institut de Salut Global de Barcelona (ISGlobal), Government of the United States of America - Centers for Disease Control and Prevention (CDC), International Centre for Diarrheal Disease Research (icddr,b), International Centre for Diarrheal Disease Research (icddr,b), International Centre for Diarrheal Disease Research (icddr,b), International Centre for Diarrheal Disease Research (icddr,b), International Centre for Diarrheal Disease Research (icddr,b), Haramaya University - College Health and Medical Science, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, Haramaya University, Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Aga Khan University - Department of Pathology, Kenya Medical Research Institute (KEMRI), Government of Mali - Centre pour le Développement des Vaccins, - Department of Pediatrics, - Department of Pediatrics, Government of Mali - Centre pour le Développement des Vaccins, Centro de Investigação em Saúde da Manhiça (CISM), Centro de Investigação em Saúde da Manhiça (CISM), Centro de Investigação em Saúde da Manhiça (CISM), Centro de Investigação em Saúde da Manhiça (CISM), Crown Agents, National Hospital Abuja, University of Ghana Medical School, Emory University - Rollins School of Public Health, University of the Witwatersrand, University of the Witwatersrand - South African Medical Research Council, University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit, University of the Witwatersrand, Government of the United States of America - Centers for Disease Control and Prevention (CDC), Emory University - Emory Global Health Institute, 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), Emory University - Emory Global Health Institute and University of Barcelona - Institut de Salut Global de Barcelona (ISGlobal)