Dr. Anthony Fauci says he would “settle” for a coronavirus vaccine that’s 70 percent to 75 percent effective – but warned that the US may not achieve herd immunity to the contagion if too many people refuse to be vaccinated, according to a report.

“The best we’ve ever done is measles, which is 97 to 98 percent effective,” the top US infectious disease expert told CNN. “That would be wonderful if we get there. I don’t think we will. I would settle for [a] 70, 75 percent effective vaccine.”

Fauci, head of the National Institute of Allergy and Infectious Diseases, noted that the incomplete protection and the fact that many people say they will skip the vaccine makes it “unlikely” that the nation will achieve sufficient immunity to stem the outbreak.

A recent CNN poll found one-third of Americans said they would not try to get a vaccine — even if it is widely available and low-cost.

Herd immunity is achieved when a sufficient percentage of a population is immune to an infectious disease, either through prior illness or vaccination.

Dr. Anthony FauciGetty Images

In the next three months, three vaccines are expected to be studied in major clinical trials — but “there is a general anti-science, anti-authority, anti-vaccine feeling among some people in this country — an alarmingly large percentage of people, relatively speaking,” Fauci said.

Given the influence of anti-vaxxers, he added, “We have a lot of work to do” to educate people on the truth about vaccines.

“It’s not going to be easy,” said Fauci, a member of the White House task force on the pandemic.

“Anyone [who] thinks it will be easy is not facing reality. It’s going to be very difficult.”

He said the government has a vaccine education program to spread the message.

“We have a program right now that’s going to be extensive in reaching out to the community,” he said.

“They may not like a government person in a suit like me telling them, even though I will tell them. They really need to see people that they can relate to in the community — sports figures, community heroes, people that they look up to.”

The US Centers for Disease Control and Prevention, which runs multiple federal health education programs, referred CNN to the US Department of Health and Human Services, which runs the White House effort to develop a vaccine.

HHS spokesman Michael Caputo did not confirm the existence of a vaccine education campaign, adding in an email that “I’d hate to see CNN put out [a] wildly incorrect story.”

When asked what grade he would give the US for handling the pandemic, Fauci said “some states are going to be A+. Some are going to be A and some are going to be down in C somewhere,” he said, singling out New York for doing “really well.”

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