University of Edinburgh - Centre for Medical Informatics, University of Edinburgh - Centre for Medical Informatics, University of Liverpool - Institute of Population Health Sciences, University of Liverpool - Department of Public Health Policy and Systems, University of Oxford - Centre for Tropical Medicine and Global Health, University of Edinburgh - Centre for Medical Informatics, Public Health England - Emerging Infections and Zoonoses Unit, University of Edinburgh - Centre for Medical Informatics, University of Liverpool - Liverpool Clinical Trials Centre, University of Birmingham - Institute of Microbiology & Infection, Queen Mary University of London - Barts and The London School of Medicine and Dentistry, University of Liverpool - Liverpool Clinical Trials Centre, University of Liverpool - NIHR Health Protection Research Unit for Emerging and Zoonotic Infection, MRC University of Glasgow Centre for Virus Research, University of Liverpool - Women’s and Children’s Health, Swansea University - Health Data Research UK, University of Oxford - Centre for Tropical Medicine and International Health, University of Birmingham - Institute of Microbiology & Infection, University of Glasgow - Institute of Health and Wellbeing, University of Edinburgh - Centre for Medical Informatics, Swansea University - Population Data Science, Public Health Scotland, University of Edinburgh - Centre for Medical Informatics, University of Oxford - ISARIC Global Support Centre, University of Edinburgh - Centre for Medical Informatics, University of Nottingham - School of Medicine, University of Edinburgh - Centre for Medical Informatics, University of Oxford - Centre for Tropical Medicine and International Health, University of Leicester - Department of Respiratory Sciences, University of Liverpool - Department of Public Health, Policy and Systems, University of Edinburgh - Centre for Medical Informatics, Lancaster University - Centre for Health Informatics, Computing and Statistics, University of Edinburgh - Queen’s Medical Research Institute, University of Glasgow - Institute of Cardiovascular and Medical Sciences, University of Edinburgh - Centre for Medical Informatics, University of Edinburgh - Usher Institute, University of Liverpool - Women’s and Children’s Health, University of Edinburgh - Department of Child Life and Health, University of Liverpool - Department of Public Health Policy and Systems, Public Health Wales - Communicable Disease Surveillance Centre, University of Liverpool - NIHR Health Protection Research Unit for Emerging and Zoonotic Infection, Imperial College London - National Heart and Lung Institute, University of Edinburgh - Roslin Institute, University of Liverpool - NIHR Health Protection Research Unit for Emerging and Zoonotic Infection and Independent

University of Edinburgh - Centre for Inflammation Research, University of Edinburgh - Centre for Medical Informatics, University of Edinburgh - Centre for Medical Informatics, University of Liverpool - NIHR Health Protection Research Unit for Emerging and Zoonotic Infection, Queen Elizabeth University Hospital, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Oxford - International Severe Acute Respiratory and Emerging Infections Consortium (ISARIC), University of Edinburgh - Centre for Medical Informatics, University of Edinburgh - Centre for Medical Informatics, University of Sheffield - Department of Infection, Immunity & Cardiovascular Disease, University of Edinburgh - Centre for Medical Informatics, University of Edinburgh - Centre for Medical Informatics, University of Liverpool - Institute of Infection, Veterinary and Ecological Sciences, University of Oxford - ISARIC Global Support Centre, University of Liverpool - Liverpool Clinical Trials Centre, Public Health England - Emerging Infections and Zoonoses Unit, University of Nottingham - Division of Epidemiology and Public Health, Imperial College London - National Heart and Lung Institute (NHLI), University of Edinburgh - Roslin Institute, University of Liverpool - Health Protection Research Unit in Emerging and Zoonotic Infections, University of Glasgow - Medical Research Council (MRC) and Independent