Filtering facepiece respirators (FFR) with exhalation valves, as well as a surgical mask or an unregulated face covering, can reduce a wearer’s aerosol emissions, according to a report released on ...

ATLANTA — There is one mask that's becoming popular online, but medical experts said it does more harm than good. Masks with what's called an exhalation valve promise better comfort than traditional ...

Forbes contributors publish independent expert analyses and insights. I write about the brain and the body but sometimes other things. New videos show how the N95 masks with an exhalation valve ...

Tank-automotive and Armaments Command recently changed its cloth face mask requirements to exclude those masks with exhalation valves. This means that face masks with exhalation valves will no longer ...

MIAMI (CBSMiami) -- A new simulation shows the limitations of face shields to protect against the coronavirus. Researchers at Florida Atlantic University in Boca Raton used laser light to show how ...

You might not know it, but the N95 respirator actually has a close cousin. One variation of the mask has an exhalation valve right in front of the mouth. It’s a one-way trip for airflow. When you ...

Not all N95 masks are effective in defending against the coronavirus. Face masks with exhalation valves, instead of blocking particles that could spread COVID-19, actually allow the wearer’s germs to ...

JOHNSON CITY, Tenn. (WJHL)- Chief Infection Prevention Officer for Ballad Health, Jamie Swift, announced an update to the hospital system’s mask mandate policy, effective Thursday. Swift said that ...

In some states and major cities, it’s now mandatory to wear a mask in public to prevent the spread of COVID-19. That mask could be anything from a handkerchief to a designer cotton mask to a ...

Nov. 10 (UPI) --Masks with exhalation valves don't help slow the spread of COVID-19, according to new videos captured using the schlieren imaging system and a technique called light-scattering. Masks ...

Using high-speed video and schlieren imaging, a research engineer has created videos that show how air flows through masks with and without exhalation valves. Many people wear masks in public to slow ...

The Centers for Disease Control and Prevention (CDC) had questions about the effectiveness of FFRs with exhalation valves for source control, such as whether such respirators protect others from the ...