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Pfizer says it will seek FDA approval for a COVID-19 vaccine booster dose

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Pfizer and BioNTech say that a third COVID-19 booster dose given about six months after the second shot improves vaccine efficacy against new coronavirus variants and that this is backed by initial data from their study on booster shots. While the COVID-19 vaccine remains 95% effective in preventing serious cases, efficacy against catching the disease has started to decrease in populations in the UK and Israel about six months after getting the second vaccine shot, according to Pfizer Chief Scientific Officer Mikael Dolsten. The company said it plans to seek emergency authorization approval from the US Food and Drug Administration in August, according to The Associated Press.

Pfizer and BioNTech say that a third COVID-19 booster dose given about six months after the second shot improves vaccine efficacy against new coronavirus variants and that this is backed by initial data from their study on booster shots. While the COVID-19 vaccine remains 95% effective in preventing serious cases, efficacy against catching the disease has started to decrease in populations in the UK and Israel about six months after getting the second vaccine shot, according to Pfizer Chief Scientific Officer Mikael Dolsten. The company said it plans to seek emergency authorization approval from the US Food and Drug Administration in August, according to The Associated Press.

  1. 8 Jul 2021

    Pfizer says it plans to seek U.S. regulators’ approval for a third COVID-19 vaccine dose. The company says its research suggests antibody levels jump markedly after a third dose, but it's not yet clear if and when boosters might truly be needed. ​

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  2. 8 Jul 2021

    Pfizer to ask FDA to authorize booster dose of COVID vaccine as Delta variant spreads

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  3. 8 Jul 2021

    BREAKING: Pfizer and BioNTech say booster shot delivered about six months after the second shot likely to provide best protection from COVID-19, according to initial data.

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  4. 8 Jul 2021

    “Americans who have been fully vaccinated do not need a booster shot at this time,” say and in a joint statement.

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  5. Data from Israel suggests Pfizer’s vaccine is less effective at protecting against infections caused by the Covid-19 Delta variant, but still prevents severe illness

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  6. 8 Jul 2021

    The companies say they have demonstrated that a third dose of their vaccine, given six months after the second, increases neutralizing antibodies five to tenfold against the original virus.

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  7. On Thursday, Pfizer’s Dr. Mikael Dolsten told that early data from the company's booster study suggests people’s antibody levels jump five- to 10-fold after a third dose, compared to their second dose months earlier.

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  8. Pfizer CEO Albert Bourla said people will "likely" need a third dose of the COVID-19 vaccine within a year of getting fully vaccinated and may need annual shots to protect against the virus.

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  9. Absolute risk reduction and relative risk reduction rates are two ways to calculate vaccine efficacy - both measurements show that approved vaccines are highly effective at preventing COVID-19 infection.

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