Nanjing Medical University, Nanjing Medical University - School of Public Health, Government of the United States of America - Centers for Disease Control and Prevention (CDC), Comisión de Investigaciones Científicas de la Provincia de Buenos Aires (CIC) - Consejo Nacional de Investigaciones Científicas y Técnicas, World Health Organization (WHO) - Department of Immunization, Vaccines and Biologicals (IVB), Boston University - Department of Global Health, Chris Hani Baragwanath Academic Hospital - Vaccines and Infectious Diseases Analytics Research Unit, Yale University - Institute for Global Health, University of Colorado at Denver - Department of Pediatrics, University of Edinburgh - College of Medicine & Veterinary Medicine, affiliation not provided to SSRN, National Center for Communicable Diseases, University of Barcelona - Institut de Salut Global de Barcelona (ISGlobal), Hospices Civils de Lyon - Laboratoire de Virologie, NCDC, University of Melbourne - Infection and Immunity, Smorodintsev Research Institute of Influenza, University of Melbourne - Infection and Immunity, affiliation not provided to SSRN, Hospital de Niños R. Gutiérrez, University of Michigan at Ann Arbor - Department of Epidemiology, University of Turku - Department of Pediatrics, National Centre for Biosecurity and Infectious Disease (NCBID) - Institute of Environmental Science and Research Limited (ESR), affiliation not provided to SSRN, All India Institute of Medical Sciences (AIIMS), New Delhi, affiliation not provided to SSRN, University of Split, FISABIO-Public Health, Perth Children’s Hospital - Telethon Kids Institute, National Health Laboratory Services (NHLS) - Centre for Respiratory Diseases and Meningitis, affiliation not provided to SSRN, University of Warwick, affiliation not provided to SSRN, affiliation not provided to SSRN, Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER), affiliation not provided to SSRN, Tehran University of Medical Sciences, MAHAN Trust Mahatma Gandhi Tribal Hospital, affiliation not provided to SSRN, Hospital de Santa Maria, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of the Witwatersrand - Department of Clinical Microbiology and Infectious Diseases, affiliation not provided to SSRN, Nagasaki University - Department of Pediatric Infectious Diseases, Nanyang Technological University (NTU) - Lee Kong Chian School of Medicine, University of Cape Town (UCT) - Department of Pediatrics and Child Health, affiliation not provided to SSRN, University of Edinburgh - College of Medicine & Veterinary Medicine and affiliation not provided to SSRN

International Centre for Diarrheal Disease Research (icddr,b), Johns Hopkins University - Department of Epidemiology, 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), Crown Agents, World Hope International, Crown Agents, ICAP – Columbia University, Government of Mali - Centre pour le Développement des Vaccins, Government of Mali - Centre pour le Développement des Vaccins, - Department of Pediatrics, - Center for Vaccine Development and Global Health, - Department of Pediatrics, Chris Hani Baragwanath Academic Hospital - Vaccines and Infectious Diseases Analytics Research Unit, University of the Witwatersrand - South African Medical Research Council, University of the Witwatersrand, University of the Witwatersrand, University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit, Kenya Medical Research Institute (KEMRI), Kisumu County Department of Health, Kenya Medical Research Institute (KEMRI), Kenya Medical Research Institute (KEMRI), Kisumu County Department of Health, Centro de Investigação em Saúde da Manhiça (CISM), University of Barcelona - Institut de Salut Global de Barcelona (ISGlobal), University of Barcelona - Institut de Salut Global de Barcelona (ISGlobal), Centro de Investigação em Saúde da Manhiça (CISM), Centro de Investigação em Saúde da Manhiça (CISM), Haramaya University - College Health and Medical Science, London School of Hygiene & Tropical Medicine, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, Mekelle University, Addis Ababa University, Emory University - Emory Global Health Institute, Emory University - Emory Global Health Institute, Government of the United States of America - Centers for Disease Control and Prevention (CDC), Emory University - Emory Global Health Institute, Emory University - Emory Global Health Institute, International Centre for Diarrheal Disease Research (icddr,b) and Independent

London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, Haramaya University - College Health and Medical Science, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, Haramaya University - College Health and Medical Science, Haramaya University, Addis Ababa Burn, Emergency and Trauma Hospital - Department of Microbiology, Haramaya University - College Health and Medical Science, Haramaya University - College Health and Medical Science, Haramaya University - College Health and Medical Science, Haramaya University - College Health and Medical Science, Haramaya University - College Health and Medical Science, Haramaya University - College Health and Medical Science, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, St. Paul’s Hospital Millennium Medical College, Ethiopian Public Health Institute, Addis Ababa University, Mekelle University, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, Haramaya University - College Health and Medical Science, University of Sussex - Brighton and Sussex Medical School, Haramaya University - College Health and Medical Science, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, Government of the United States of America - Centers for Disease Control and Prevention (CDC), Emory University - Emory Global Health Institute, St. Paul’s Hospital Millennium Medical College, Haramaya University - College Health and Medical Science, Haramaya University - College Health and Medical Science and London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology

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)

United Nations Children’s Fund (UNICEF) - Division of Data, Analytics, Planning and Monitoring, Division of Data, Analytics, Planning and Monitoring, UNICEF, London School of Hygiene & Tropical Medicine, Division of Data, Analytics, Planning and Monitoring, UNICEF, University of Massachusetts Amherst, University of Washington, University of Washington, World Health Organization (WHO) - Department of Maternal, Newborn, Child and Adolescent Health, United Nations, World Bank Group, Government of the United States of America - Centers for Disease Control and Prevention (CDC), London School of Hygiene & Tropical Medicine - Department of Infectious Disease Epidemiology, Johns Hopkins University, The Demographic and Health Surveys (DHS) Program, ICF International, Inter-agency Group for Child Mortality Estimation (UN IGME), University of British Columbia and the Children’s and Women’s Hospital and Health Centre of British Columbia, University of Cape Town (UCT), RTI International, SAMRC/UP Maternal and Infant Health Care Strategies Unit, Member of the Core Stillbirth Estimation Group, UN IGME, University of Leicester - Department of Population Health Sciences, University of Angers - French Institute of Health and Medical Research (INSERM) and University of Massachusetts Amherst - Department of Biostatistics and Epidemiology

University of the Witwatersrand, University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit, Government of the United States of America - Centers for Disease Control and Prevention (CDC), University of the Witwatersrand, University of the Witwatersrand, Haramaya University - College Health and Medical Science, London School of Hygiene & Tropical Medicine - Department of Infectious Disease and Epidemiology, Haramaya University - Department of Medical Laboratory Sciences, London School of Hygiene & Tropical Medicine, University of Calabar (UNICAL) - Department of English & Literary Studies, Crown Agents, ICAP – Columbia University, World Health Organization (WHO), - Department of Pediatrics, Government of Mali - Centre pour le Développement des Vaccins, - Department of Pediatrics, Government of Mali - Centre pour le Développement des Vaccins, Centro de Investigação em Saúde de Manhiça, Centro de Investigação em Saúde da Manhiça (CISM), Centro de Investigação em Saúde da Manhiça (CISM), Centro de Investigação em Saúde da Manhiça (CISM), University of Barcelona - Institut de Salut Global de Barcelona (ISGlobal), 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), 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), Kisumu County Department of Health, Emory University - Emory Global Health Institute, Emory University - Emory Global Health Institute, University of Barcelona - Institut de Salut Global de Barcelona (ISGlobal), University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit and Independent