WASHINGTON — Top federal health officials have told the White House to scale back a plan to offer coronavirus booster shots to the general public later this month, saying that regulators need more time to collect and review all the necessary data, according to people familiar with the discussion.
Dr. Janet Woodcock, the acting commissioner of the Food and Drug Administration, and Dr. Rochelle P. Walensky, who heads the Centers for Disease Control and Prevention, warned the White House on Thursday that their agencies may be able to determine in the coming weeks whether to recommend boosters only for recipients of the Pfizer-BioNTech vaccine — and possibly just some of them to start.
The two health leaders made their argument in a meeting with Jeffrey D. Zients, the White House pandemic coordinator. Several people who heard about the session said it was unclear how Mr. Zients responded. But he has insisted for months that the White House will always follow the advice of government scientists, wherever it leads.
Asked about the meeting, a White House spokesman on Friday said, “We always said we would follow the science, and this is all part of a process that is now underway,” adding that the administration was awaiting a “full review and approval” of booster shots by the F.D.A. as well as a recommendation from the C.D.C.
“When that approval and recommendation are made,” the spokesman, Chris Meagher, said, “we will be ready to implement the plan our nation’s top doctors developed so that we are staying ahead of this virus.”
Less than three weeks ago, Mr. Biden said that contingent on F.D.A. approval, the government planned to start offering boosters the week of Sept. 20 to adults who had received their second shot of the Pfizer-BioNTech or Moderna vaccine at least eight months ago. That would include many health care workers and nursing home residents, as well as some people older than 65, who were generally the first to be vaccinated. Administration officials have said that recipients of the single-dose Johnson & Johnson vaccine would probably be offered an additional shot soon as well.
Mr. Biden cast the strategy as another tool that the nation needed to battle the highly contagious Delta variant, which has driven up infection rates, swamped hospitals with Covid-19 patients and is now leading to an average of more than 1,500 deaths a day. “The plan is for every adult to get a booster shot eight months after you got your second shot,” he said on Aug. 18, adding, “It will make you safer, and for longer. And it will help us end the pandemic faster.”
Like Mr. Biden, members of his pandemic response team have said that the plan depended on the F.D.A. and the C.D.C. authorizing the booster shots. Both Dr. Woodcock and Dr. Walensky publicly endorsed the strategy, as did the nation’s other senior health leaders.
Privately, Dr. Woodcock had argued that it was risky to set a firm date for a booster rollout before regulators had a chance to thoroughly review the data, some of which had yet to be submitted by the vaccine manufacturers, and decide whether shots were safe and necessary, according to several people familiar with the discussions.
And since the White House announced the booster plan in mid-August, they said, new hurdles appeared.
Among the reasons for delaying is that regulators need more time to decide the proper dosage for a possible third Moderna shot. The company’s application asking the F.D.A. to authorize a booster shot contains insufficient data, one federal official familiar with the process said. Other data expected from Johnson & Johnson has not been delivered.
Nor has the raw data that the F.D.A. has been seeking from Israel, which is already giving boosters to everyone 12 and older. Israeli officials say their data shows that the potency of Pfizer’s vaccine wanes over time against severe disease and hospitalization, but that a third shot bolsters protection significantly. The F.D.A. wants to see the underlying data, to make sure it backs up summaries that the Israeli government has provided.
Narrowing the booster plan could confuse the public and create a perception that federal vaccine policy is in some degree of disarray. But some public health experts will most likely welcome it.
They have been arguing strenuously that the administration lacks the data to justify a broad rollout of extra shots and should instead concentrate on vaccinating the roughly 25 percent of Americans who are eligible for shots but remain unprotected. And some have said that Biden aides wrongly cornered regulators by announcing a strategy before they could conduct a full review.
Understand Vaccine and Mask Mandates in the U.S.
- Vaccine rules. On Aug. 23, the Food and Drug Administration granted full approval to Pfizer-BioNTech’s coronavirus vaccine for people 16 and up, paving the way for an increase in mandates in both the public and private sectors. Private companies have been increasingly mandating vaccines for employees. Such mandates are legally allowed and have been upheld in court challenges.
- Mask rules. The Centers for Disease Control and Prevention in July recommended that all Americans, regardless of vaccination status, wear masks in indoor public places within areas experiencing outbreaks, a reversal of the guidance it offered in May. See where the C.D.C. guidance would apply, and where states have instituted their own mask policies. The battle over masks has become contentious in some states, with some local leaders defying state bans.
- College and universities. More than 400 colleges and universities are requiring students to be vaccinated against Covid-19. Almost all are in states that voted for President Biden.
- Schools. Both California and New York City have introduced vaccine mandates for education staff. A survey released in August found that many American parents of school-age children are opposed to mandated vaccines for students, but were more supportive of mask mandates for students, teachers and staff members who do not have their shots.
- Hospitals and medical centers. Many hospitals and major health systems are requiring employees to get a Covid-19 vaccine, citing rising caseloads fueled by the Delta variant and stubbornly low vaccination rates in their communities, even within their work force.
- New York City. Proof of vaccination is required of workers and customers for indoor dining, gyms, performances and other indoor situations, although enforcement does not begin until Sept. 13. Teachers and other education workers in the city’s vast school system will need to have at least one vaccine dose by Sept. 27, without the option of weekly testing. City hospital workers must also get a vaccine or be subjected to weekly testing. Similar rules are in place for New York State employees.
- At the federal level. The Pentagon announced that it would seek to make coronavirus vaccinations mandatory for the country’s 1.3 million active-duty troops “no later” than the middle of September. President Biden announced that all civilian federal employees would have to be vaccinated against the coronavirus or submit to regular testing, social distancing, mask requirements and restrictions on most travel.
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