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A scientific review, published in the scientific journal The Lancet, concluded that “no booster dose of the corona vaccine is needed at this time, noting that there are” health warnings “that may be combined with an early third dose.
The conclusion reached by several scientists, including two senior officials from the Food and Drug Administration and the World Health Organization, came as studies continue to show that Covid vaccines approved in the United States are still very effective against serious infections and hospitalizations as a result of infection with a Delta variant spreading rapidly.
Among the scientists who participated in the Lancet research was Marion Gruber, director and deputy director of the FDA’s Office of Vaccine Research and Review, Krause.
CNBC says the two officials will be leaving the FDA this year after it was reported that they were frustrated with the agency’s decision to support the booster doses.
Scientists said that while the effectiveness of Covid vaccines against mild infections may decrease over time, protection against serious infections may continue, because the body’s immune system is complex and has defenses other than antibodies that can protect a person from contracting serious illness.
Scientists wrote that a wide distribution of booster doses is “inappropriate at this stage of the epidemic.”
The researchers recognized that booster doses for the general population might eventually be needed if the immunity induced by the vaccine was further diminished or if a new variant emerged that could escape the protection offered by the vaccines.
Scientists noted that there are risks to giving the booster “early”, including the potential for side effects such as a rare heart disease known as myocarditis, which is more common after the second dose of. RNA vaccines.
“If the unnecessary booster causes significant adverse effects, there may be effects on vaccine acceptance beyond the benefits of the booster doses,” they wrote.
The comments come a week before the Biden administration announced plans to begin providing booster doses of the Covid vaccine to the general public, as a Food and Drug Administration advisory group meets on Friday to discuss data to support the widespread use of boosters.
Last month, the administration cited three new studies released by the Centers for Disease Control and Prevention that showed vaccine protection against Covid declined over several months.
A management plan outlined by senior health officials calls for a third dose eight months after people receive their second injection of the Pfizer or Moderna vaccine.
Scientists and health experts have repeatedly criticized the plan, saying data cited by federal health officials “was unconvincing” and calling administration pressure for a coup. inch of “premature”.
Scientists said the boost might be appropriate for some people, such as those with weakened immune systems, who do not produce an adequate immune response after receiving two doses of the vaccine.
Federal health officials last month authorized booster doses for these people, including cancer and HIV patients, or those who have had organ transplants.
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