Pfizer says Omicron vaccines produce stronger immune response

Man walking past Pfizer ad
(Image credit: Massimo Giachetti / iStock)

A pair of Pfizer and BioNTech vaccine boosters designed to target the Omicron variant of the COVID-19 virus have been shown to produce a significantly stronger immune response to Omicron, the companies said Saturday.

According to The Wall Street Journal, the vaccines were designed to target the original BA.1 subvariant of Omicron, but preliminary results suggest that they could also be effective against the increasingly dominant BA.4 and BA.5 strains.

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Grayson Quay

Grayson Quay was the weekend editor at TheWeek.com. His writing has also been published in National Review, the Pittsburgh Post-GazetteModern AgeThe American ConservativeThe Spectator World, and other outlets. Grayson earned his M.A. from Georgetown University in 2019.