From a month ago:
Dr. Anthony Fauci now says as much as 90 percent of the population may need to get vaccinated or infected to achieve herd immunity against COVID-19 — admitting in a new interview that he has been intentionally raising the bar based, in part, on what he thinks the country is ready to hear.
“We really don’t know what the real number is,” the nation’s top infectious disease expert told the New York Times.
“I think the real range is somewhere between 70 to 90 percent. But, I’m not going to say 90 percent.”
Ref: https://nypost.com/2020/12/24/fauci-covid-herd-immunity-requ...