Even though the United States will have enough Covid-19 vaccines for all Americans by at least the end of July, it may take an additional couple of months to get everyone vaccinated, according to Dr. Anthony Fauci.
Fauci, who is director of the National Institute of Allergy and Infectious Diseases, said the US needs "about 600 million doses" to vaccinate the entire population.
"How long it will take to vaccinate people will really depend upon the efficiency with which you get doses into people's arms," Fauci told CNN's Anderson Cooper on Wednesday.
Countdown to herd immunity: Fauci said he believes between 70% and 85% of the population may need to get immunized against coronavirus for herd immunity to take effect.
"I hope that by the time we get to that point, whereas the President said, we have enough available for anyone who wants it, that people come forward and we actually do vaccinate that 70 to 85% of the population, which hopefully will get us to the point of herd immunity," he said.