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 ...

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 ...

Many people wear masks in public to slow the spread of COVID-19, as recommended by the Centers for Disease Control and Prevention (CDC). However, masks with exhalation valves do not slow the spread of ...

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 ...

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 ...

The U.S. Centers for Disease Control and Prevention (CDC) advises that NIOSH-approved respirators, including elastomeric half-mask respirators (EHMRs), are appropriate for use against SARS-CoV-2 in ...

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 ...

WASHINGTON, November 10, 2020 -- If you have seen someone wandering around the grocery store or elsewhere with a mask with a valve on it and wondered how safe it is for you, you were right to be ...

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 ...

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 ...

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 ...