Most face masks won’t stop COVID-19 indoors, study warns

Authors: by John Anderer

New research reveals that cloth masks filter just 10% of exhaled aerosols, with many people not wearing coverings that fit their face properly.

WATERLOO, Ontario — N95 or KN95 face masks may be the best way to avoid COVID-19 during crowded indoor events. That’s the recommendation from a new study reporting most cloth masks just don’t do the job when it comes to stopping the spread of coronavirus within enclosed spaces.

Researchers from the University of Waterloo simulated a person breathing in a large room with a cloth face mask on. Despite wearing a mask, the study finds a large buildup of aerosol droplets suspended in the air. Besides raising awareness on the vulnerability of certain face masks, these findings also emphasize the need for proper ventilation indoors. More ventilation means less of a chance for potentially viral aerosols to linger around.

“There is no question it is beneficial to wear any face covering, both for protection in close proximity and at a distance in a room,” says study leader Serhiy Yarusevych, a professor of mechanical and mechatronics engineering, in a university release. “However, there is a very serious difference in the effectiveness of different masks when it comes to controlling aerosols.”

Studies continue to show that aerosols exhaled by infected individuals can indeed infect others with COVID-19, even if someone is standing more than six feet away.

For More Information: https://www.studyfinds.org/face-masks-wont-stop-covid-indoors/