A new study published in JAMA shows 1 in 100,000 people had vaccine-related myocarditis and 1.8 in 100,000 people had pericarditis — compared to the CDC’s data that 4.8 people per 1 million suffer myocarditis after receiving a COVID vaccine.
U.S. public health officials claim cases of myocarditis and pericarditis following COVID vaccination are rare — but new research published online in the Journal of American Medical Association (JAMA) shows they may happen more often than reported.
Post-vaccine myocarditis and pericarditis also appear to represent two “distinct syndromes,” Dr. George Diaz, with the Providence Regional Medical Center Everett, told Medscape Cardiology.
Diaz and colleagues reviewed 2,000,287 electronic medical records (EMR) of people who received at least one COVID vaccination.
The records, obtained from 40 hospitals in Washington, Oregon, Montana and California, showed 20 people had vaccine-related myocarditis (1.0 per 100,000) and 37 had pericarditis (1.8 per 100,000).
A recent report, by the Centers for Disease Control and Prevention (CDC), based on data from the Vaccine Adverse Events Reporting System (VAERS), suggested an incidence of myocarditis of about 4.8 cases per 1 million following receipt of an mRNA COVID vaccine.