
The incidence of myocarditis in the study is higher than the Centers for Disease Control and Prevention’s estimate published last week.
The findings suggest that there may be more cases than are reported to the federal database for tracking adverse events following vaccinations.
A new study, published in the Journal of the American Medical Association, identified two distinct self-limited heart-related syndromes, myocarditis and pericarditis, in patients after administration of COVID-19 vaccinations.
Source
https://www.express.co.uk/life-style/health/1473300/covid-vaccine-heart-inflammation-myocarditis-risk