To curb the transmission of COVID-19, the Centers for Disease Control and Prevention (CDC) has recently begun to recommend using a cloth face covering when you’re out in public. But why exactly is ...
Surgical masks are made up of several layers of nonwoven plastic and can effectively filter very small particles, such as droplets of SARS-CoV-2 (the virus that causes COVID-19). The masks typically ...
Editor’s note: As we will report below, experts agree that face masks with filters — and without — do not replace or relieve the need to wash your hands and practice safe social distancing, and they ...
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