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The rise of COVID-19 infections due to the rampant spread of the Delta variant has cast a shadow over a summer many thought would be a return to normalcy. Last Friday, the U.S. hit 100,000 daily infections, a number we haven't seen since vaccines became readily available.

The good news is that the surge in cases has inspired a lot of vaccine-hesitant people to change their minds.

"This may be a tipping point for those who have been hesitant to say, 'OK, it's time,'" Dr. Francis Collins, director of the National Institutes of Health, told CNN. "I hope that's what's happening. That's what desperately needs to happen if we're going to get this Delta variant put back in its place."

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