Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, speaks during a hearing of the Senate Committee on Health, Education, Employment and Pensions at the Senate Office of Dirksen in Washington, DC, US, July 20, 2021.
Stefani Reynolds | Reutesr
Anthony Fauci, the White House chief medical officer, said Thursday that he would not be surprised if the complete regimen recommended for the Pfizer and Modern Covid-19 vaccines in the United States becomes three doses, instead of two.
Giving people an additional dose, or perhaps a final dose, several months after receiving their initial vaccination helps the immune system mature, said Fauci, also the director of the National Institute of Allergy and Disease. Infectious.
“I have to say from my experience as an immunologist, I would not be at all surprised that the full appropriate regimen for vaccination is probably three doses,” Fauci told reporters during a Covid White House briefing.
Comments from infectious disease experts come as the Biden administration prepares to begin distributing widely distributed Covid booster shots the week of September 20th.
The plan, explained by senior health officials last month, requires a third dose eight months after people receive their second shot of Pfizer or Modern vaccines.
Federal health officials, citing three new studies published by the Centers for Disease Control and Prevention, have shown that the protection of vaccines against Covid infection is diminished several months after people have received his second dose.
Health experts say it is not uncommon for vaccines to require more than two doses. Vaccination for hepatitis B and HPV, for example, requires third doses, with several months between the second and third stroke.
While Americans may need to get a third shot, some health experts have warned officials not to call them “boosters”. That’s because, like other vaccines, Americans don’t need more boosters at a later time.
Fauci said Thursday he will leave it to the Food and Drug Administration and other regulators to make a determination on the full regime, but added that it is reasonable to believe that three doses will provide a more lasting immune response.
“If it’s durable, then you have to be very likely that a three-dose regimen is the routine regimen,” he said.