Coronavirus spread would dramatically drop if 80 per cent of a population wore masks

If 80% of Americans Wore Masks, COVID-19 Infections Would Plummet, New Study Says
There’s compelling evidence that Japan, Hong Kong, and other East Asian locales are doing it right and we should really, truly mask up—fast.

BY DAVID EWING DUNCAN

MAY 8, 2020

マスク肯定派ー飛沫拡散防止により感染拡散防止　人口の8割がマスクーー布マスクでもOK---コロナ拡散は劇的に減少する、とAI研究者。