Novel coronavirus disease (Covid-19): The first two patients in the UK with person to person transmission. Issue 5 (May 2020) - Lillie, Patrick J.; Samson, Anda; Li, Ang; Adams, Kate; Capstick, Richard; Barlow, Gavin D.; Easom, Nicholas; Hamilton, Eve; Moss, Peter J.; Evans, Adam; Ivan, Monica; PHE Incident Team,; et al.