Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, has again changed his perspective on the COVID-19 herd immunity threshold in the United States, saying that his previous figures were “guesstimates.”
Fauci last week told The New York Times that to achieve herd immunity against COVID-19, up to 90 percent of the population would need to be vaccinated, acknowledging that he had gradually increased his estimates from around 60 or 70 percent earlier in the year.
The nation’s top infectious disease expert is advising both President Donald Trump and Democratic presidential nominee Joe Biden on the CCP virus pandemic.
Fauci said Dec. 27 that his numbers were based on measles, not polling.
“Measles is about 98 percent effective vaccine [sic]. The COVID-19 vaccine is about 94, 95 percent,” Fauci said. “When you get below 90 percent of the population vaccinated with measles, you start seeing a breakthrough against the herd immunity, people starting to get infected, like we saw in the Upper New York state and in New York City with the Orthodox Jewish group, when we had measles outbreak.”
“So I made a calculation that COVID-19 is not as nearly as transmissible as measles. Measles is the most transmissible infection you can imagine,” Fauci said. “I would imagine that you would need something a little bit less than the 90 percent. That's where I got to the 85.”
Fauci told Bash that although “nobody really knows for sure” what percentage of the U.S. population should be vaccinated to achieve COVID-19 herd immunity, 70 to 85 percent seems to be “a reasonable estimate.”
“In fact, most of my epidemiology colleagues agree with me,” he added.
“I want to encourage the people of the United States and globally to get vaccinated, because, as many as we possibly get vaccinated, we will get closer to herd immunity,” Fauci said. “So, the bottom line is, it's a guesstimate. I gave a range. I use any discussion like we're having now ... to encourage people to get to that goal of 70 to 85 percent of the people vaccinated. That's where we really want to be.”
Health care workers, elderly nursing home residents, elected officials, and firefighters are among those to receive the vaccines first. Americans have been told that vaccinations for the general public will take six months or more to complete for logistical reasons.