The vast majority of cases occur in young men, ages 16 to 24, according to the CDC. The agency did not have data available on the total number of cases in young adults 24 and younger, but it estimates there have been 52.4 cases and 56.3 cases per million doses of Pfizer’s and Moderna’s vaccines, respectively.
Symptoms of myocarditis include:
- Chest pain
- Shortness of breath
- Feelings of having a fast-beating, fluttering or pounding heart
A study by Canadian researchers published Monday in the Journal of the American College of Cardiology found that men younger than 40 who got the Moderna vaccine had the highest risk of heart issues, usually within 21 days after the second dose. The study was observational, meaning it doesn’t prove cause and effect but it is one of only a few studies to compare the risk of myocarditis between the Pfizer and the Moderna vaccines.
Dr. Dongngan Truong
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