"Multiple lines of evidence indicate that B.1.1.7 is more efficiently transmitted than are other SARS-CoV-2 variants."

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Added on April 10, 2026
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COVID-19 pandemic in the United StatesCOVID-19 pandemic by country
Original Language: English

Sources

CDC in "New, more contagious coronavirus variants mean US must double down on mitigation, vaccination, CDC says", (January 15, 2021)