An elevated rate of Bell’s palsy was identified among elderly people after vaccination with a Pfizer booster shot, U.S. regulators said in a new study.
The “small but statistically significant elevation” in Bell’s palsy was detected after vaccination with Pfizer’s old booster, which is no longer available in the United States, researchers with the U.S. Food and Drug Administration (FDA) said in a preprint study.
The elevated rate resulted in an adjusted incidence rate ratio of 1.13 and remained consistent when researchers adjusted for different factors, such as prior COVID-19 infection.
A rate above one shows a possible connection between the vaccine and an adverse event….