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Study: Multi-layer face masks work better

Experts say cloth face coverings can help stop the spread of COVID-19, and new research suggests masks with two layers of fabric are more effective than those with a single layer. CBS News' Naomi Ruchim has details.

Jul 24, 2020 (02:09)

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The moment Hurricane Isaias made landfall

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Secret Service director warns of unprecedented threats

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Latest details of ICE shooting in NYC

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Fort Hood gunman execution to be livestreamed

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Secret Service director on new threats

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Alabama emergency management director on Isaias

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