Monday, August 2, 2021
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Pfizer says it is developing Covid booster shots that target highly infectious delta variants. – News


Pfizer And BioNTech Announced Thursday, they are developing a Covid-19 booster shot aimed at targeting delta mutants.

The two companies believe that a third dose of the current double-dose vaccine may maintain the “highest level” of protection against all currently known variants, including Delta, but “warning. Don’t neglect “, vaccine.

“As seen in real-world evidence released by the Israeli Ministry of Health, vaccine efficacy declines six months after vaccination, while delta mutants are becoming the predominant mutant in the country.” Both companies stated in writing. ..

“These findings are consistent with the ongoing analysis from the company’s Phase 3 trial,” they said. “That’s why we said, and based on all the data we have so far, a third dose may be needed within 6-12 months after complete vaccination. We continue to believe that it is expensive. “

According to the two companies, clinical trials could begin as early as August, subject to regulatory approval.

The announcement will come on the same day that the Olympic organizers said They ban all spectators From this year’s game after Japan declared a state of emergency, we aim to curb the wave of new Covid-19 infections partly due to delta variants.

Delta is estimated by the World Health Organization to be about 55% more contagious than Alpha. This is the first variant discovered in Britain, which once dominated the United States. Scientists say they don’t protect against mild illness or the spread of illness to others.

On Monday, Israeli authorities report He said that the reduced effectiveness of the Pfizer-BioNTech vaccine in the prevention of infectious and symptomatic illnesses is very effective in preventing serious illnesses.

In the United States, health officials, especially Delta Expected to cause another surge in new coronavirus cases, Especially in places with the lowest vaccination rates.

There is About 1,000 counties in the United States Dr. Rochelle Walensky, director of the CDC, recently said that Covid has a vaccination rate of less than 30%, primarily in the southeast and midwest. With the further spread of delta variants, authorities have already seen an increase in infection rates in these areas.

Pfizer and BioNTech executives expect the vaccine’s immunity to decline over time, so booster shots or a third dose may be required within 12 months of being fully vaccinated. I have repeatedly stated that it is expensive. They also said that people are likely to need to get additional shots each year.

Pfizer and BioNTech are developing booster shots and will soon seek US approval for a third dose of the vaccine.

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