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Five years after Donald Trump declared a national COVID emergency, here's what the research says about face masks.

N95 and KN95 masks are both rated to capture 95% of particles, but there are some differences. N95 masks are regulated by the National Institute for Occupational Safety and Health (NIOSH ...

It found that masks, "if correctly and consistently worn," are "effective in reducing transmission of respiratory diseases and show a dose-response effect." It also found that, N95 and KN95 masks ...

Introduction: The global coronavirus disease (COVID-19) pandemic of 2020 caused by SARS-CoV-2 resulted in a shortage of filtering facepiece respirators (FFRs), such as N95 and KN95 masks.

Few objects symbolize the pandemic as well as the N95. Impossible to find until they were ubiquitous, the double-strapped ...

By the time evacuation warnings come, you may not have a lot of time to think. That's why it pays to prepare in advance.

Health authorities in Greece have issued a warning advising vulnerable groups to take precautions as Sahara dust storms, high ...