That turned out to be premature. Only Pfizer, one vaccine maker, has won authorization to administer additional doses, and for just some of its recipients.
On Wednesday, the F.D.A. authorized boosters, but only for older adults, people with underlying health conditions and some frontline workers who are frequently exposed to the virus.
The agency’s decision stood in direct contrast to Mr. Biden’s earlier comments.
Doctors were also split on Friday over the decision by Dr. Walensky to overrule her own panel of immunization experts.
On Thursday, the panel voted to recommend boosters for older adults and those with underlying health issues. But it advised against allowing frontline workers like teachers and nurses who have already been vaccinated to get a booster shot.
In a decision announced early Friday morning, Dr. Walensky rejected that last recommendation and said that the C.D.C. would allow the frontline workers to receive boosters. In a briefing for reporters later on Friday, she defended the move, noting that the panel was sharply divided on the issue.
“Our teachers are facing uncertainty as they walk into the classroom, and I must do what I can to preserve the health across our nation,” Dr. Walensky said, calling it “a first step” and saying that “we will continue to review new data on effectiveness and experience with the third shot, as it becomes available.”
Dr. Steven Joffe, a professor of medical ethics and health policy at the University of Pennsylvania, said that with such a close vote at the C.D.C.’s meeting, it was reasonable for Dr. Walensky to rule a different way. But he suggested that she could have been influenced by the support she and the administration had earlier shown for a broader distribution of the booster.
Article source: https://www.nytimes.com/2021/09/24/us/politics/biden-science-boosters-vaccine.html