FDA requires updated warning about rare heart risk with COVID shots
WASHINGTON — The Food and Drug Administration said Wednesday it has expanded existing warnings on the two leading COVID-19 vaccines about a rare heart side effect mainly seen in young men.
Myocarditis, a type of heart inflammation that is usually mild, emerged as a complication after the first shots became widely available in 2021. Prescribing information from both Pfizer and Moderna already advises doctors about the issue.
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