[PeterisP]

We can start with US Surgeon General (https://twitter.com/Surgeon_General/status/12337257852839321... - "They are NOT effective in preventing general public from catching #Coronavirus")

And off the first page of duckduckgo: https://www.businessinsider.com/wuhan-coronavirus-face-masks...

https://time.com/5794729/coronavirus-face-masks/

https://nationalpost.com/news/world/how-to-avoid-coronavirus...

But yes, many media companies are giving an appropriate message of either why there's little reason to wear a mask right now (little chance of random community spread today) or about the allocation of scarce masks to people who need them more.

[s1artibartfast]

prevention /= harm reduction.

condoms aren't 100% effective, but still worth using.