Pfizer says third COVID shot gives antibodies in threefold, likely can handle Delta variant

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The FDA on Wednesday posted much of the evidence from Pfizer on booster shots to be considered by its advisory panel on Friday.

is arguing that a third shot of its vaccine increases virus-battling antibodies by threefold in recipients, the Associated Press reported.

On Wednesday, the FDA posted much of the evidence from Pfizer on booster shots to be considered by its advisory panel on Friday, AP reported. Pfizer said in the evidence that while two doses of the vaccine continue to protect people against severe infection, immunity against mild cases seems to weaken six to eight months after the second shot.

Pfizer said the booster shots facilitated"roughly 95 [percent] effectiveness" when Delta was spreading, similar to the effectiveness seen when the vaccine was initially distributed in 2021.As the Food and Drug Administration's advisory panel considers authorizing a Pfizer booster shot, the manufacturer is saying that a third dose of its COVID-19 vaccine increases virus-fighting antibodies by threefold in recipients.

The FDA is not bound to follow the advice of its independent advisory panel. But if the agency overrules its own experts, that could stoke public confusion. Earlier this week, two top FDA vaccine regulators joined a group of international scientists in rejecting boosters now for otherwise healthy individuals, citing the strong continuing protection against severe disease.

 

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