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Dr. Jha: 'Critical' to receive 2nd shot to help protect against delta variant

Dr. Ashish Jha, dean of the Brown University School of Public Health, comments on concerns by health experts over the spread of the delta variant, saying the strain is now dominant in the UK and hospitalizations there are rising. "That's what we want to avoid, and the only way we know how to avoid that is getting a lot more people vaccinated," he said.

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