Pulmonologist Dr Sonia Goel emphasises that not all masks protect equally against pollution. N95 and KN95 masks are most ...
Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. Exposing contaminated N95 respirators to vaporized hydrogen peroxide (VHP) or ultraviolet (UV) ...
Masks were critical in fighting Covid-19, but billions of them are now causing an environmental crisis. Studies show ...
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