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COVID-19: Surgical masks may help, but not as first line of defense

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As the Centers for Disease Control and Prevention (CDC) are changing tack regarding their recommendation to the public about wearing face masks, some experts explain how certain masks could help keep the coronavirus at bay.

However, these should be our last resort, they warn. A few days ago, the CDC issued new guidance on the circumstances under which it is advisable to wear masks during the COVID-19 pandemic.

The federal agency now “recommends wearing cloth face coverings in public settings where other social distancing measures are difficult to maintain (e.g., grocery stores and pharmacies) especially [original emphasis] in areas of significant community-based transmission.” Yet, by advising the use of homemade cloth masks, the CDC are

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