Did early focus on hand washing and not masks aid spread of Covid-19?

From the moment coronavirus reached UK shores, public health advice stressed the importance of washing hands and deep-cleaning surfaces to reduce the risk of becoming infected.

The advice was informed by mountains of research into the transmission of other respiratory viruses: it was the best scientists could do with such a new pathogen.

But as the pandemic spread and data rolled in, some scientists began to question whether the focus on hand hygiene was as crucial as it seemed.

Länk: GUARDIAN