Jan 27, 2022
(Comparisons with myocarditis rates following infection now irrelevant as vaccination no longer prevents infection.)
A recent study published on January 25, 2022, on JAMA Network, has shown that the risk of myocarditis following mRNA COVID vaccination is around 133 times greater than the background risk in the population.
The study, conducted by researchers from the U.S. Centers for Disease Control (CDC) as well as from several U.S. universities and hospitals, examined the effects of vaccination with products manufactured by Pfizer-BioNTech and Moderna. The study’s authors used data obtained from the CDC’s VAERS reporting system which were cross-checked to ensure they complied with CDC’s definition of myocarditis; they also noted that given the passive nature of the VAERS system, the number of reported incidents is likely to be an underestimate of the extent of the phenomenon.
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