You Still Probably Don’t Need A Mask For COVID-19
Why most public health bodies still don’t recommend masks for the general public
Edit 2: Updated 5/04/2020 as the US CDC has shifted their recommendations in light of new evidence to recommend the use of cloth face-masks in public situations. The World Health Organization has changed their stance slightly, although remain largely neutral on face mask wearing. The article has been updated to reflect the new evidence — this is still largely about the inconsistency addressed in point 3.
Edit: Updated 2/04/2020 as the lead author of the only RCT on cloth masks has described their use as a “last resort”, given the plausible evidence from this trial that they may in some cases increase the risk of infection and/or transmissibility of the virus from people who themselves are sick.
Note: at the outset, I will admit that I am primarily a chronic disease epidemiologist. While I am happy to use my expertise to explain the evidence to you, the final word as ever should come from the experts, such as your local health authority or the World Health Organization.
In times of coronavirus, nothing is more contentious than the question of masks. There are dozens of conflicting opinions online, from the poorly-researched yelling on twitter to the…
