Dr Philippa Whitford @Dr_PhilippaW
@gmhales @PaulEkblom1 @harryrutter Agree - we need to recognise ability of #COVID19 aerosols to linger and infect several people indoors (think how smoke used to hang in the air in pubs before smoking ban). #Ventilation & air purification is key to being #COVIDSecure — PolitiTweet.org