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 ...

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 ...

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 ...

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 ...

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 ...

SAN FRANCISCO, Calif. (KRON) — The CDC recommends that people wear masks and face coverings in public settings to help prevent the spread of COVID-19. Masks with exhalation valves or vents should not ...

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 ...

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 ...

United Airlines is the latest commercial air carrier to update its coronavirus-related personal protective equipment guidance to exclude face masks with built-in exhaust valves, the company announced ...

LOS ANGELES - Until a coronavirus vaccine is made widely available, social distancing measures like avoiding large crowds, proper hand-washing techniques and wearing facial coverings are the best ...

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 ...