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Doubling up on masks doubles down on protection, WVU experiment confirms

According to new research from the West Virginia University School of Medicine, the combination of a disposable surgical mask as an underlayer with a tightly-fitting fabric outer layer significantly improves filtration efficiency and protection.

WVU in The Conversation

West Virginia University contributes to and supports The Conversation, an international news source that seeks out academics to provide independent, high quality, authenticated, explanatory journalism to promote better understanding of current affairs and complex issues.

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