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Pfizer seeks U.S. approval for COVID vaccine booster

Vials of the Pfizer-BioNTech Comirnaty branded Covid-19 vaccine in Amandelbult, South Africa, on Thursday, Aug. 12, 2021. (Photo: Waldo Swiegers/Bloomberg via Getty Images)

Aug 25 (Reuters) - Pfizer Inc on Wednesday said a booster dose of its two-shot COVID-19 vaccine spurs a more than threefold increase in antibodies against the coronavirus, as the company seeks U.S. regulatory approval for a third injection.

The drugmaker and its German partner BioNTech SE aim to complete the submission for use of booster shots in people aged 16 and over by the end of this week.

The U.S. government has said it was gearing up to roll out the third shot of vaccines from both Pfizer and Moderna Inc from mid-September to Americans who had their initial course more than eight months ago if the U.S. Food and Drug Administration and the U.S. Centers for Disease Control and Prevention decide that boosters are needed.

That eight-month gap is likely to be narrowed to six months, the Wall Street Journal reported on Wednesday.

A committee of outside advisors to the CDC is scheduled to meet on Monday to review clinical data.

Pfizer said 306 people given a third dose of its vaccine between five and eight months after their second shot showed levels of neutralizing antibodies that were 3.3 times the levels seen after their second shot.

The study, details of which have not yet been published, also found that side effects of a third shot were similar to second-dose reactions, including mild to moderate fatigue and headache, the company said.

Scientists continue to debate whether waning antibody levels mean that COVID vaccine boosters need to be given widely, but some countries are moving ahead.

Israel began rolling out boosters at the beginning of August to older citizens and this week expanded the drive to people as young as 30, saying the shots were helping to increase protection against the highly infectious Delta variant of the coronavirus.

U.S. President Joe Biden has said, “It’s the best way to protect ourselves from new variants that may arise.”

However, World Health Organization Director General Tedros Adhanom Ghebreyesus said the data on the benefits and safety of a COVID-19 vaccine booster shot is inconclusive.

The health agency called for a delay in rolling out booster shots and a goal of higher vaccination rates in countries where many had not received a first or second shot.

On Monday, U.S. regulators granted full approval to Pfizer’s two-dose vaccine, which has been available up until now under emergency use authorization.

The approval spurred some local governments, such as New York City and the state of New Jersey, as well as the U.S. military and some companies, to mandate vaccines.

A third dose of the Pfizer-BioNTech vaccine is not currently authorized for broad use in the United States.

However, under the amended emergency use authorization, a third dose was authorized for administration to individuals at least 12 years of age who were immunocompromised.

Pfizer and BioNTech said they intend to file the data with the European Medicines Agency and other regulatory authorities around the world in coming weeks.

(Reporting by Mrinalika Roy and Manas Mishra in Bengaluru; Deena Beasley in Los Angeles; Editing by Arun Koyyur, Mark Porter and Jonathan Oatis)

Information pertaining to Covid-19, vaccines, how to control the spread of the virus and potential treatments is ever-changing. Under the South African Disaster Management Act Regulation 11(5)(c) it is prohibited to publish information through any medium with the intention to deceive people on government measures to address COVID-19. We are therefore disabling the comment section on this article in order to protect both the commenting member and ourselves from potential liability. Should you have additional information that you think we should know, please email [email protected]

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