3 ms·
Comparative Efficacy of Facemasks for filtering expelled droplets during speech
- haltingproblem 6y agotl;dr by Dr. Farzad Mostashari https://twitter.com/Farzad_MD/status/1292560856157388800 https://twitter.com/Farzad_MD/status/1292560856157388800 tl;dr^2 "But the bottom line here is that almost all of these masks cut down droplet spread by 80% or more That is huge. Simple version: If we all wore effective masks and wore them well, then the reproductive number could fall from 2.5 to less than 1.0, and outbreak would extinguish"