Pfizer’s fourth booster shot is expected to be ready in March

Pfizer Inc’s CEO Albert Bourla said that the omicron-targeted vaccine of COVID-19 will be ready in March, and the Company has already begun manufacturing the doses.

“This vaccine will be ready in March,” Bourla told CNBC’s. Bourla said the vaccine would also target the other variants that are circulating. He said it is still not clear whether or not an omicron vaccine is needed or how it would be used, but Pfizer will have some doses ready since some countries want it ready as soon as possible.

Real-world data from the U.K. has shown that Pfizer’s and Moderna vaccines are only about 10% effective at preventing symptomatic infection from omicron 20 weeks after the second dose, according to a study from the U.K. Health Security Agency.

However, the study found that the initial two doses still provide reasonable protection against severe illness.

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According to the study, booster shots are up to 75% effective at preventing symptomatic infection.

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