University of Edinburgh, Nanjing Medical University, University of Edinburgh, Royal College of Surgeons (UK), Nanjing Medical University, University of Edinburgh, University of Edinburgh, AstraZeneca Biopharmaceuticals, Nanjing Medical University - School of Public Health, Nanjing Medical University, University of Edinburgh, NHS National Services Scotland and University of Edinburgh - College of Medicine & Veterinary Medicine

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

Nanjing Medical University - School of Public Health, Nanjing Medical University, University of Edinburgh - Usher Institute, Utrecht University - Department of Pediatrics, University of Washington - Division of Allergy and Infectious Diseases, University of Cape Town (UCT) - Department of Pediatrics and Child Health, University of Edinburgh, Wuhan University, Nanjing Medical University, University College Hospital, University of Birmingham, Shenzhen Children’s Hospital, Hospital Clínic de Barcelona, University of Turku, Pontificia Universidade Catolica do Rio Grande do Sul (PUCRS) - Centro Infant, University Hospital Würzburg - Division of Paediatric Infectious Diseases, University of Split, Ohio State University (OSU), University of the Witwatersrand - Vaccines and Infectious Diseases Analytics Research Unit, Medical University of Graz - Research Unit for Neonatal Infectious Diseases and Epidemiology, MAHAN Trust Mahatma Gandhi Tribal Hospital, National University of Singapore (NUS), University of Colorado at Denver - Department of Pediatrics and University of Edinburgh - College of Medicine & Veterinary Medicine

University of Edinburgh, University of Edinburgh, Nanjing Medical University, Nanjing Medical University - School of Public Health, Pfizer, Inc., Pfizer, Inc., Pfizer, Inc., University of Edinburgh, Pfizer, Inc. and University of Edinburgh - College of Medicine & Veterinary Medicine

University of Aberdeen - Health Economics Research Unit, University of Antwerp - Centre for Health Economics Research and Modelling Infectious Diseases (CHERMID), University of Antwerp - Centre for Health Economics Research and Modelling Infectious Diseases (CHERMID), Statens Serums Institut - Department of Virus and Microbiological Special Diagnostics, University of Padua - Division of Paediatric Infectious Diseases, NIVEL (Netherlands Institute for Health Services Research), Nanjing Medical University - School of Public Health, Sanofi - France, University of Padua - Institute of Pediatric Research, Utrecht University - Department of Pediatrics, Università degli Studi di Pisa - Dipartimento di Ricerca Traslazionale e delle Nuove Tecnologie in Medicina e Chirurgia, Roskilde University - Department of Science and Environment, University of Turku - Department of Pediatrics, Utrecht University - Department of Pediatrics, University of Antwerp - Centre for Health Economics Research and Modelling Infectious Diseases (CHERMID), New York University (NYU), University of Antwerp - Centre for Health Economics Research and Modelling Infectious Diseases (CHERMID) and University of Antwerp - Centre for Health Economics Research and Modelling Infectious Diseases (CHERMID)

Nanjing Medical University, Nanjing Medical University - School of Public Health, Nanjing Medical University, Nanjing Medical University, Wuxi Centre for Disease Control and Prevention and Nanjing Medical University