WASHINGTON, March 31 (UPI) -- A poorly fitted respirator performs no better than a loosely fitting surgical mask against influenza germs, U.S. and Chinese researchers said. John D. Noti of the ...

A key deficiency of surgical and cloth masks is their loose fit compared to respirators. While some older, hard-cup style respirators may be uncomfortable, newer styles are better tolerated .

Loose-fitting masks or those pressed against facial hair allow aerosols to leak. A good mask will have a large surface area, a tight fit around the edges, and a shape that leaves space around your ...

SAN FRANCISCO — There’s a certain kind of N95 mask that’s actually bad to wear for public health during the COVID-19 pandemic. San Francisco’s health officer warns that N95 masks with a ...

Talking with the Italian engineers who 3D-printed respirator parts for hospitals with coronavirus patients for free. ... The first is a mask. The startup created a prototype earlier this week, ...

In some parts of Asia, surgical masks became commonplace during SARS epidemic of 2002-2003. By Mike Ives The Centers for Disease Control and Prevention conceded in an announcement on Friday that ...

3M, the world's largest maker of respirator masks, said Friday it is willing comply with President Trump's order to manufacture and supply more critically needed N95 masks for the United States.