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Pfizer asks FDA to approve omicron-specific booster shot

Pfizer Inc. said Monday that it has asked the U.S. Food and Drug Administration to approve the emergency use of an updated booster shot that targets several versions of the omicron variant.

Animal studies show that the new mRNA vaccine produces an immune response against both the BA.4 and BA.5 subvariants, with clinical trials set to begin this month, the company said in a news release announcing the application.

“The agility of the mRNA platform, together with extensive clinical experience with the Pfizer-BioNTech COVID-19 Vaccine, has allowed us to develop, clomid 100 slaat niet aan test, and manufacture updated, high-quality vaccines that align to circulating strains with unprecedented speed,” Pfizer Chairman and CEO Albert Bourla said in the news release. “Having rapidly scaled up production, we are positioned to immediately begin distribution of the bivalent omicron BA.4/BA.5 boosters, if authorized, to help protect individuals and families as we prepare for potential fall and winter surges.”

The BA.5 subvariant accounts for nearly 90 percent of new U.S. COVID-19 cases, according to the U.S. Centers for Disease Control and Prevention.

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