NY Post: Not All Masks Are Created Equal

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The 14 face masks tested in Duke University study, ranked from best to worst

The experiment, published Friday in the journal Science Advances, tested 14 different types of masks and was inspired by a request from Fischer’s co-worker Dr. Eric Westman, who works with Cover Durham, an initiative to distribute reusable face coverings to those in need. 

See how the 14 masks ranked at nypost.com

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