Dr. Anthony Fauci speaks with CNN’s Dana Bash about his estimated percentage of the American population that would need to be vaccinated against Covid-19 before the country reaches herd immunity, and why his range has shifted.
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Dr. Anthony Fauci speaks with CNN’s Dana Bash about his estimated percentage of the American population that would need to be vaccinated against Covid-19 before the country reaches herd immunity, and why his range has shifted.