The Guardian: "COVID-19 discoveries: what we know now that we didn’t know before"

"How COVID spreads

When COVID first hit the UK, so too did sales of hand sanitiser. On 28 February, Boris Johnson said: “The best thing people can do to prevent the spread of coronavirus is wash your hands.”

The emphasis was, in part, because it was thought one of the key routes by which COVID was spread was by people touching contaminated surfaces and then touching their own face – so called “fomite transmission”. Websites even appeared designed to alert you should you reach for your features, while many people became concerned about whether to disinfect groceries and parcels.

But experts now argue that the role of tiny virus-containing particles called aerosols, emitted along with larger droplets when infected people breathe, speak or cough, were overlooked – and that ventilation in indoor settings is crucial to reduce the spread of COVID."

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https://www.theguardian.com/world/2021/aug/06/four-areas-where-what-is-known-about-the-covid-virus-has-evolved

The Guardian: "COVID-19 discoveries: what we know now that we didn’t know before"