Why Australia is under pressure to upgrade advice on Covid’s aerosol transmission

Experts cite examples of coronavirus spreading via airborne transmission including, in one case, by faecal aerosols produced by toilet flushing'

The latest coronavirus outbreak from hotel quarantine in Western Australia has focused attention on how the virus is transmitted. Hotel quarantine is supposed to be secure with returned travellers separated from each other. Staff and residents are meant to be regularly tested for Covid-19 and infection control procedures are supposed to be rigorous.

Yet as Burnet Institute epidemiologist Prof Mike O'Toole points out, there have been 14 hotel quarantine leaks in Australia since November. So if infection control procedures are in place and people are kept apart, how is the virus that causes Covid-19 escaping?