[sumodm]

Misconception of how Covid-19 spreads might have led to initial decisions by various agencies to say that masks are not necessary.

1. Covid-19 has redefined airborne transmission: https://www.bmj.com/content/bmj/373/bmj.n913.full.pdf

2. https://www.wired.com/story/the-teeny-tiny-scientific-screwu...