Ludwig Maximilian University of Munich (LMU) - Division of Pediatric Epidemiology, Charité - Universitätsmedizin Berlin - Institute of Virology, Heidelberg University - Paediatric Infectious Diseases, Charité - Universitätsmedizin Berlin - Institute of Virology, Charité - Universitätsmedizin Berlin - Institute of Virology, Heidelberg University - Paediatric Infectious Diseases, Ludwig Maximilian University of Munich (LMU) - Division of Pediatric Epidemiology, RWTH Aachen University - Department of Paediatrics, RWTH Aachen University - Department of Paediatrics, Charité - Universitätsmedizin Berlin - Department of Paediatric Respiratory Medicine, Immunology, and Critical Care Medicine, Dresden University of Technology - Department of Paediatrics, Heinrich Heine University Dusseldorf - Department of General Pediatrics, Neonatology, and Pediatric Cardiology, University of Freiburg - Department of General Pediatrics, Adolescent Medicine and Neonatology, University of Freiburg - Department of General Pediatrics, Adolescent Medicine and Neonatology, University of Rostock - Department of Paediatrics, Justus Liebig University Giessen - Department of Paediatrics, University Medical Center Hamburg- Eppendorf - University Children's Hospital, University Medical Center Hamburg- Eppendorf - University Children's Hospital, Hannover Medical School - Centre for Paediatrics and Adolescent Medicine, Hannover Medical School - Centre for Paediatrics and Adolescent Medicine, Saarland University - Department of General Paediatrics, Neonatology, Helios-Klinikum Krefeld - Department of Paediatrics, Helios-Klinikum Krefeld - Department of Paediatrics, Ludwig Maximilian University of Munich (LMU) - Division of Paediatric Infectious Diseases, Ludwig Maximilian University of Munich (LMU) - Dr. von Hauner Children's Hospital, Technische Universität München (TUM) - Department of Pediatrics, University Hospital Würzburg - Division of Paediatric Infectious Diseases, Heidelberg University - Paediatric Infectious Diseases, Charité - Universitätsmedizin Berlin - Institute of Virology, Ludwig Maximilian University of Munich (LMU) - Division of Pediatric Epidemiology and Heidelberg University - Paediatric Infectious Diseases

Ludwig Maximilian University of Munich (LMU), Ludwig Maximilian University of Munich (LMU), Ludwig Maximilian University of Munich (LMU), Ludwig Maximilian University of Munich (LMU), Ludwig Maximilian University of Munich (LMU), National Institute for Medical Research (NIMR), University of Cape Town Lung Institute, Radboud University Nijmegen - Radboud University Medical Center, Ludwig Maximilian University of Munich (LMU), Ludwig Maximilian University of Munich (LMU) - Division of Infectious Diseases and Tropical Medicine, Ludwig Maximilian University of Munich (LMU), Ludwig Maximilian University of Munich (LMU), Ludwig Maximilian University of Munich (LMU) - Division of Paediatric Infectious Diseases, Ludwig Maximilian University of Munich (LMU) and Independent

Imperial College London, affiliation not provided to SSRN, affiliation not provided to SSRN, Universidade de Santiago de Compostela - Genetics, Vaccines, Infections and Paediatrics Research group (GENVIP), affiliation not provided to SSRN, Imperial College London - Section of Paediatric Infectious Disease, Imperial College London, Imperial College London - Department of Epidemiology and Biostatistics, affiliation not provided to SSRN, Imperial College London, University of Liverpool, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, London School of Hygiene & Tropical Medicine - Medical Research Council Unit The Gambia, Imperial College London, affiliation not provided to SSRN, Erasmus University Rotterdam (EUR) - Department of Paediatric Infectious Diseases and Immunology, affiliation not provided to SSRN, Bern University Hospital, University of Bern, Imperial College London, Radboud University Nijmegen - Section of Paediatric Infectious Diseases, NHS Foundation Trust - Department of Paediatric Immunology, Infectious Diseases & Allergy, Royal Alexandra Hospital, University of Amsterdam - Department of Pediatric Immunology, Rheumatology and Infectious Disease, affiliation not provided to SSRN, Erasmus University Rotterdam (EUR) - Department of General Paediatrics, University of Oxford - Oxford Vaccine Group, affiliation not provided to SSRN, University of Oxford - Oxford Vaccine Group, University of Zurich, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Ludwig Maximilian University of Munich (LMU) - Division of Paediatric Infectious Diseases, London School of Hygiene & Tropical Medicine - Department of Clinical Research, affiliation not provided to SSRN, Medical University of Graz - Department of General Paediatrics, Imperial College London, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, Imperial College London - Section of Paediatric Infectious Disease, Universidad Complutense de Madrid (UCM), affiliation not provided to SSRN, Imperial College London - Section of Paediatric Infectious Disease, Imperial College London - Section of Paediatric Infectious Disease and affiliation not provided to SSRN