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Pfizer, BioNTech to seek authorization for COVID booster shot as Delta variant spreads
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![Pfizer, BioNTech to seek authorization for COVID booster shot as Delta variant spreads]()
Pfizer said a study from Israel showed that the effectiveness of its vaccine against symptomatic disease declined approximately six months after people were fully vaccinated. Pfizer, BioNTech to seek authorization for COVID booster shot as Delta variant spreads
Pfizer and partner BioNTech plan to ask U.S. and European regulators within weeks to authorize a booster dose of its COVID-19 vaccine, based on evidence of greater risk of infection six months after inoculation and the spread of the highly contagious Delta variant.
Pfizer and partner BioNTech plan to seek authorisation for a third booster dose of coronavirus vaccine in Europe, the US and Asia. The move comes as the highly-contagious Delta variant drives infection surges around the world.
Pfizer said a study from Israel showed that the effectiveness of its vaccine against symptomatic disease declined approximately six months after people were fully vaccinated.
The biopharmaceutical company's chief scientific officer, Mikael Dolsten, said the recently reported dip was mostly due to infections in people who had been vaccinated in January or February, according to Reuters.
The news agency also reported the country's health ministry as saying vaccine effectiveness in preventing both infection and symptomatic disease fell to 64% in June.
The World Health Organization has said there was limited data on the length of protection offered by current vaccines.
