[melagonster]

>It was just an old idea

but it is from the experience of another Corona virus outbreak last time.

Asia just know wearing mask is helpful anyway.

[felipeerias]

But the health authorities in the West did not update their knowledge in view of that evidence. I am familiar with the case of Spain: when the COVID-19 pandemic started, the public healthcare guidelines in Spain still classified coronaviruses as mild viruses, not more severe than the flu.