As a booster shot COVID-19 (New Coronavirus Infection) Vaccines have become widely available in the United States, and some vaccine experts are not convinced that injections are widely needed.
Studies show that older people are at increased risk of serious breakthrough Covid cases, but data on the need for boosters in the younger age group are limited.
In addition, federal pressure has made it difficult for some vaccine experts to make objective decisions about boosters, some said. Interview with The New York Times..
As of October 25, more than 13 million Americans, including about 18% of the elderly, have received additional vaccinations.
Booster shots are now widely available to Americans, but some experts aren’t sure if they are widely needed.Photo: Nurse receives Pfizer booster in Miami, Florida, October 2021
To date, more than 13 million Americans have been boosted, according to the CDC. The dark blue states on this map administer boosters to a larger proportion of the vaccinated population, with Alaska accounting for the highest proportion (11%).
An additional Covid vaccine dose was first approved for Americans with weakened immunity in mid-August.
Then, in late September, the Food and Drug Administration (FDA) and the US Centers for Disease Control and Prevention (CDC) approved booster shots for seniors and others who were considered high-risk vaccinated with Pfizer vaccine.
The institution follows this Last week’s additional approvalAllows Americans vaccinated with Moderna, Johnson & Johnson to receive additional vaccinations.
As of October 25, about 13.3 million Americans I received a booster shot.
This includes 8.2 million older people, or about 18% of Americans over the age of 65.
Despite this widespread adoption, some vaccination professionals are skeptical about whether additional vaccination is actually needed, especially for the younger age group.
In an interview with the Times, experts on the FDA and CDC advisory boards expressed concerns about limited data and political pressure.
“These are not evidence-based recommendations,” Dr. Saralong, a pediatric infectious disease expert who provides the services of the CDC’s Vaccine Advisory Board, told the Times.
Current federal approvals for boosters allow older people, adults at high risk of severe Covid, and people living and working in high-risk environments (such as hospitals and schools) to receive Pfizer and Modana boosters. can do.
In addition, all adults who initially receive the one-shot Johnson & Johnson vaccine are eligible for J & J boosters.
“I don’t think there’s evidence that all of these groups need boosters today,” Dr. Matthew Daily, a member of the CDC’s Vaccine Advisory Board, told the Times.
Evidence in favor of booster shots for older people is clearer than evidence from other groups.Photo: Booster Vaccination at Washington, DC Safeway, October 2021
For the elderly, the evidence in favor of booster shots is fairly clear.
According to CDC data, the majority of breakthrough Covid cases requiring hospitalization of patients occur in the elderly.
Other studies of breakthrough Covid patterns have shown that older people and people with chronic illness are more susceptible to severe cases.
Older people tend to have a weaker protective immune system than younger adults, according to one expert. Told the American Retirement Association..
However, for other adult groups, the data are less clear.
Because the CDC focuses on tracking only cases that lead to hospitalization or death after spring, data on breakthrough Covid infections that do not result in serious illness are very limited.
However, CDC research discovered Vaccines should remain very effective for the hospitalization of young Americans, including those who work in hospitals, long-term care facilities, and other medical facilities.
Other studies have similarly shown that the Covid vaccine continues to provide strong protection for young adults.
In one analysis, New York State Health officials found that: Vaccine maintained over 90% effectiveness Opposed to hospitalization for adults aged 18 to 64 during the state’s delta surge in the summer of 2021.
At the same time, the study believes that the reduced effectiveness of vaccines against infection is due to highly contagious mutants and changes in human behavior rather than antibody decline.
Vaccine companies often cite antibody-level data as positive evidence that product protection declines over time, but scientists wonder how these measurements correspond to protection against Covid. I don’t clearly understand.
Various aspects of the immune system such as memory B cells and T cells Play a role in long-term protectionHowever, it is difficult to measure.
Meanwhile, the vaccine company provided limited information on the safety and efficacy of booster shots. One expert told Times that the data from Moderna and J & J was “very poor quality.”
Despite the lack of evidence that young adults need booster shots, the Biden administration announced in August that all Americans would soon be eligible for additional doses.
Experts spoke to The Times said the administration’s public position put pressure on their decision-making.
“The doors are getting bigger and bigger, step by step,” Dr. Paul Offit, a child vaccine expert and FDA advisory board member, told The Times.
“Companies got what they wanted, the administration got what they wanted.”
This pressure was reflected in a mix of votes and comments at the FDA and CDC Advisory Board meetings.
In fact, after a CDC adviser voted against recommending Pfizer booster shots to working adults living in high-risk environments, the director of the authorities rejected the vote.
After this rejection, the votes for the Moderna and J & J vaccines were unanimous, but many concerns remained and not all votes were based solely on evidence.
“I don’t know if we need a booster,” Dr. Cody Meissner, a member of the FDA committee, told the Times.
But he says, “If you intend to do it for one group, I think it dictates a kind of fairness that you have to do it for all groups.” I did.
Not all vaccine professionals are convinced that they need a COVID-19 vaccine booster
Source link Not all vaccine professionals are convinced that they need a COVID-19 vaccine booster