Please provide your email address to receive an email when new articles are posted on . Nearly 100% of N95 masks pass fit tests after 3 years, suggesting annual tests are not necessary. Moving to ...

Share on Pinterest New research examines the protection offered by fit-tested N95 masks against airborne particles. John Tlumacki/The Boston Globe via Getty Images Healthcare workers rely on N95 ...

Face masks can help to reduce transmission of respiratory viruses such as influenza, according to experts and medical evidence, but their effectiveness depends on the type of mask used. Social media ...