12 h, feb 7, 2020 y - Guardian: Masks "not always useful for the healthy general public"
Description:
https://www.theguardian.com/world/2020/feb/07/who-warns-global-shortage-face-masks-protective-suits-coronavirusAdded to timeline:
Date:
12 h, feb 7, 2020 y
Now
~ 5 years and 8 months ago