A nurse holds a vial of Moderna COVID-19 vaccine in Septeme-Les-Vallons, France on Jan. 12, 2022. (Clement Mahoudeau/AFP via Getty Images) The risk of heart inflammation following receipt of a COVID-19 booster shot remains elevated, according to a new study.
The primary series of the messenger RNA-based vaccines, made by Pfizer and Moderna, have already been linked to heart inflammation , but not as much research has been done on whether booster doses also present heart-related risks.
In the study, French researchers analyzed 4,890 myocarditis cases admitted to hospitals in the country between Dec. 27, 2020, and Jan. 31, 2022. They used 48,900 controls from the general population, matching for gender, age, and area of residence.
Receipt of a COVID-19 vaccine booster was found to result in an elevated risk of myocarditis, a type of heart inflammation, particularly receipt of a Moderna booster.The adjusted risk after a Pfizer booster was three times […]
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