National numbers, July 18

Cases have been rising for a couple of weeks now, but we’re now seeing the sharpest increase since fall 2020. Between July 9 and July 16, we went from an average of 15,000 new cases a day to an average of 26,000 new cases a day.

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National numbers, July 11

The Delta variant is now officially causing more than half of new cases in the U.S., per the CDC’s Nowcast estimates. This super-transmissible variant has contributed to rising cases in under-vaccinated parts of the country.

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National numbers, July 4

This is the first week since April that we’ve seen new COVID-19 case numbers go up in the U.S. It’s nominally a small bump—about 7,300 more cases than last week—but represents a 9% increase, and may be the beginning of a summer surge. (Even if we see a dip in the numbers this week due to the July 4 holiday.)

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