Failed COVID-19 mask trial shows why more masks are needed - Los Angeles Times
MSA Safety Donates 300 Reusable Elastomeric Half-Mask Respirators to New York City-Based COVID Courage - Dec 21, 2020
Engineers design a reusable, silicone rubber face mask | MIT News | Massachusetts Institute of Technology
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AHN Turns to New Masks on Frontlines of COVID-19 Battle | Pittsburgh Magazine
Coronavirus: U.S. stocked N95 face masks instead of reusable respirators
Lombardy insists on face masks outside homes to stop Covid-19 | Coronavirus | The Guardian
Woman Faces Taunts For Wearing Heavy Duty Mask In Colorado Grocery Store - CBS Colorado
Yes, masks reduce the risk of spreading COVID, despite a review saying they don't
Cost-effective protection with Half-Mask Respirators
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Masking up matters: High-quality studies confirm face masks significantly curb COVID-19 spread
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Can I use a mouth shield instead of a mask? Your COVID-19 questions answered | CBC News
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Are cloth masks effective for Covid? Surgical masks vs. KN95 explained
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