Pfizer decided to inform the US authorities about the need for a third dose of its vaccine
Pfizer intends to inform the US authorities in the near future about the need to use the third (booster) injection of the coronavirus vaccine. This is reported by The Washington Post.
Presumably, this will be announced at a meeting with the heads of relevant state institutions on Tuesday, July 12.
The booster dose, which is administered six months after vaccination, allows you to produce 5-10 times more antibodies than after the standard two injections, according to Pfizer researchers. The company also expressed concern about the decrease in the effectiveness of the vaccine as a shield against morbidity, while its effectiveness in preventing serious diseases remains high.
Now the US medical authorities believe that the vaccinated do not need a third dose of the vaccine yet, but they have agreed to change their decision if there is sufficient evidence. In addition, officials warn that calls to go for vaccination again may reduce the level of public confidence in the vaccination campaign.
In early June, scientists at Rockefeller University in the United States found that timely additional doses (boosters) of currently available vaccines are the best way to provide additional protection to people who have never had COVID-19.
Earlier, scientists from the University of Washington and the Vir Biotechnology laboratory in San Francisco told about another, California coronavirus mutation. This strain reduces the effectiveness of existing vaccines by up to 50-70 percent. So, the virus manages to neutralize the antibodies that are produced after the Pfizer and Moderna vaccines. In addition, antibodies formed after COVID-19 are also under attack.