University of Liverpool - National Institute for Health Research (NIHR) Health Protection Research Unit (HPRU) in 31 Emerging and Zoonotic Infections, National Institute for Health Research (NIHR), National Institute for Health Research (NIHR), University of St. Andrews - Division of Infection and Global Health, HIV i-Base, Mortimer Market Centre, Central and North West London NHS Foundation Trust, Department of Global Health and Infection, Brighton and Sussex Medical School, University of Sussex, 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, Imperial College London - National Heart and Lung Institute (NHLI), University of Edinburgh - Roslin Institute, National Institute for Health Research (NIHR) - Health Protection Research Unit in Blood Borne and Sexually Transmitted Infections, University of Liverpool - Health Protection Research Unit in Emerging and Zoonotic Infections and Independent