Watch Covid-19 cases sweep across the United States
CNN
In 10 seconds, this animation shows the march of Covid-19 cases across the United States in the pandemic's most recent six months.
Starting July 1, 2021, amid a relatively quiet summer the emergence of new cases fueled by the Delta variant spreads across the South in August. Cases then climb across the Plains, Midwest and Northeast by fall.
Another dramatic rise overwhelms the map starting in December, likely attributable to the more transmissible Omicron variant. As of this week, nearly every county is reporting average rates higher than 100 new cases per 100,000 people. Average daily new cases nationwide are now more than three times the pandemic's peak last winter.
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