University of Oxford - Oxford Vaccine Group, University of Siena - Institute of Global Health, University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit, Federal University of São Paulo (UNIFESP), University of Oxford - The Jenner Institute, University of Oxford - Centre for Vaccinology and Tropical Medicine, University of Oxford - Oxford Vaccine Group, University of the Witwatersrand, Stellenbosch University - Family Centre for Research with Ubuntu, Soweto Clinical Trials Centre, University of Oxford - Centre for Vaccinology and Tropical Medicine, University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit, University of Oxford - The Jenner Institute, University of Oxford - Centre for Vaccinology and Tropical Medicine, Liverpool School of Tropical Medicine - Department of Clinical Sciences, University of the Witwatersrand - South African Medical Research Council Vaccines and Infectious Diseases Analytical Research Unit, University of Sheffield - Department of Infection, Immunity and Cardiovascular Disease, University of Cape Town (UCT) - Centre for Lung Infection and Immunity, University of Oxford - Jenner Institute, Newcastle upon Tyne Hospitals NHS Foundation Trust - Department of Infection and Tropical Medicine, University of Oxford - Oxford Vaccine Group, GSK plc, University of Oxford - The Jenner Institute, Wits Reproductive Health & HIV Institute (WRHI), University of Southampton - NIHR Southampton Clinical Research Facility and Biomedical Research Centre, University of Oxford - Oxford Vaccine Group, University of Liverpool - School of Tropical Medicine, University of Bristol - Bristol Vaccine Centre, St George’s University London - St George’s Vaccine Institute, University College London - Department of Infection, University of Oxford - Clinical BioManufacturing Facility, University Hospitals Birmingham NHS Foundation Trust, University of Oxford - Oxford Vaccine Group, University of the Witwatersrand - South African Medical Research Council, Liverpool School of Tropical Medicine - Department of Clinical Sciences, AstraZeneca Pharmaceuticals, University of the Witwatersrand - South African Medical Research Council, University of Oxford - The Jenner Institute, University of Oxford - Centre for Vaccinology and Tropical Medicine, University of the Witwatersrand - South African Medical Research Council, University of the Witwatersrand - South African Medical Research Council, University Hospitals Bristol - University Hospitals Bristol and Weston NHS Foundation Trust, University College London, Hull University Teaching Hospitals NHS Trust, University of Oxford - Centre for Vaccinology and Tropical Medicine, AstraZeneca Pharmaceuticals, Braziland Hospital São Rafael - Escola Bahiana de Medicina e Saúde Pública, Universidade Federal do Rio Grande do Norte (UFRN), University of Oxford - The Jenner Institute, London Northwest University Healthcare, University of Oxford - Oxford Vaccine Group, University of the Witwatersrand - Perinatal HIV Research Unit, Setshaba Research Centre, University of Oxford - Oxford Vaccine Group, Hospital Quinta D'OR, University of Oxford - Oxford Vaccine Group, Imperial College London - Department of Infectious Disease, University of Oxford - Oxford Vaccine Group, University of Oxford - Oxford Vaccine Group, Hospital Universitário de Santa Maria, University of Glasgow - College of Medical, Veterinary & Life Sciences, University of Oxford - Centre for Vaccinology and Tropical Medicine, University of Oxford - Centre for Vaccinology and Tropical Medicine, Universidade Federal do Rio Grande do Sul (UFRGS), Western General Hospital - Clinical Infection Research Group, MRC-University of Glasgow Centre for Virus Research, University of Cambridge - Department of Medicine, Royal Papworth HospitalUniversity of Cambridge - Heart and Lung Research Institute, Nottingham University Hospitals NHS Trust, AstraZeneca Biopharmaceuticals, AstraZeneca Pharmaceuticals, AstraZeneca Pharmaceuticals, Anuerin Bevan University Health Board, University of Oxford - The Jenner Institute, University of Oxford - The Jenner Institute, University of Oxford - Chinese Academy of Medical Science Oxford Institute (COI), University of Oxford - Oxford Vaccine Group and Independent

University of the Witwatersrand, University of the Witwatersrand, University of the Witwatersrand, University of the Witwatersrand - Department of Internal Medicine, University of the Witwatersrand - Division of Infectious Diseases, University of the Witwatersrand, University of the Witwatersrand, University of the Witwatersrand, University of the Witwatersrand, University of the Witwatersrand, University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit and Chris Hani Baragwanath Academic Hospital - Vaccines and Infectious Diseases Analytics Research Unit

affiliation not provided to SSRN, University of the Witwatersrand - Medical Research Council: Respiratory and Meningeal Pathogens Research Unit, Chris Hani Baragwanath Academic Hospital - Vaccines and Infectious Diseases Analytics Research Unit and University of the Witwatersrand

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), University of Maryland - Department of Pediatrics, Government of Mali - Centre pour le Développement des Vaccins, University of Maryland - 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