Title:
Cloth face masks offer zero shield against virus, a study shows
Author:
Naoya Kon
Published:
The Asahi Shimbun, 7 July 2020
http://www.asahi.com/ajw/articles/13523664
From the article:
Cloth face masks, often cobbled together as a makeshift alternative when stocks of surgical masks run low, and sometimes worn as a fashion statement, offer no practical protection against the novel coronavirus, a study shows.
Kazunari Onishi, an associate professor at St. Luke’s International University in Tokyo, found that cloth masks had a 100-percent leakage rate in terms of airborne particles penetrating the fabric and through the gap between masks and faces, substantially raising the risk of infection.