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"Pivotal discovery" about Delta variant prompted new mask guidance, CDC says

New data from a coronavirus outbreak of the Delta variant in Provincetown, Massachusetts, prompted federal officials to change their masking guidance earlier this week, the CDC said. Here's what you need to know.

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    • Coronavirus (U.S.)
    • Coronavirus (COVID-19)
    • U.S. News
    • United States
    • Health
"Pivotal discovery" about Delta variant prompted new mask guidance, CDC says

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