The FDA has mandated Pfizer and Moderna to enhance the warning labels for their COVID-19 vaccines concerning heart injury risks linked to mRNA shots, particularly in teen boys and young men. The updated regulations apply to males aged 16 to 25, reflecting findings that indicate a higher incidence of myocarditis and pericarditis after vaccination. The risk was previously documented for younger individuals, but the new blanket warning emphasizes the increased likelihood of heart issues in the specified age group, amid guidance that these complications are still considered rare overall.
The FDA's latest warning identifies a heightened risk of myocarditis and pericarditis in males aged 16 to 25 following mRNA COVID-19 vaccinations.
In both Pfizer's and Moderna's vaccines, the risk of heart side effects appears highest in young males, particularly within a week of vaccination.
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