Superspreaders drive the largest outbreaks of hospital onset COVID-19 infections by Illingworth, CJ, Hamilton, WL, Warne, B, Routledge, M, Popay, A, Jackson, C, Fieldman, T, Meredith, LW, Houldcroft, CJ, Hosmillo, M, Jahun, AS, Caller, LG, Caddy, SL, Yakovleva, A, Hall, G, Khokhar, FA, Feltwell, T, Pinckert, ML, Georgana, I, Chaudhry, Y, Curran, MD, Parmar, S, Sparkes, D, Rivett, L, Jones, NK, Sridhar, S, Forrest, S, Dymond, T, Grainger, K, Workman, C, Ferris, M, Gkrania-Klotsas, E, Brown, NM, Weekes, MP, Baker, S, Peacock, SJ, Goodfellow, IG, Gouliouris, T, de Angelis, D, Török, ME