[1] Univ Oxford, Big Data Inst, Nuffield Dept Med, Old Rd Campus, Oxford OX3 7LF, England
[2] Univ Oxford, Dept Zool, Oxford OX1 3SZ, England
[3] Univ Oxford, Wellcome Ctr Human Genet, NIHR Biomed Res Ctr, Nuffield Dept Med, Old Rd Campus, Oxford OX3 7BN, England
[4] Oxford Univ Hosp NHS Fdn Trust, John Radcliffe Hosp, Oxford OX3 9DU, England
[5] Stellenbosch Univ, Div Med Virol, Stellenbosch, South Africa
[6] Hampshire Hosp NHS Fdn Trust, Basingstoke & North Hampshire Hosp, Basingstoke RG24 9NA, Hants, England
[7] Univ Surrey, Sch Biosci & Med, Guildford GU2 7XH, Surrey, England
[8] Gibraltar Hlth Author, Gibraltar, Gibraltar
[9] Univ Southampton, Sch Med, Southampton SO17 1BJ, Hants, England
[10] Univ Birmingham, Inst Microbiol & Infect, Birmingham B15 2TT, W Midlands, England
[11] Univ Oxford, Peter Medawar Bldg Pathogen Res, Oxford OX1 3SY, England
[12] Univ Oxford, John Radcliffe Hosp, Nuffield Dept Med, Oxford OX3 9DU, England
[13] Univ Oxford, Big Data Inst, Nuffield Dept Publ Hlth, Old Rd Campus, Oxford OX3 7FL, England
[14] Publ Hlth Wales Microbiol, Pathogen Genom Unit, Cardiff CF10 4BZ, Wales
[15] Cardiff Univ, Sch Biosci, Cardiff CF10 3AX, S Glam, Wales
[16] MRC Univ Glasgow Ctr Virus Res, Glasgow G61 1QH, Lanark, Scotland
[17] Wellcome Sanger Inst, Cambridge CB10 1SA, England