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 .

A new proposal would exempt workers using filtering facepiece and loose-fitting powered air-purifying respirators from ...

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 ...