The rate of myocarditis in children up to age 15 was .5-4 per million, before COVID, and before COVID vaccines, which would result in about 280 cases per year in children in the United States. (Occurrence and Features of Childhood Myocarditis: A Nationwide Study in Finland, 2019). Almost all of the cases occur post-puberty.
After children started receiving COVID vaccines, the rate per million for that age group went up to 70 per million.
“as a passive system, VAERS data are subject to reporting biases in that both underreporting and overreporting are possible.38 Given the high verification rate of reports of myocarditis to VAERS after mRNA-based COVID-19 vaccination, underreporting is more likely. Therefore, the actual rates of myocarditis per million doses of vaccine are likely higher than estimated.” (Myocarditis cases reported after mRNA-based COVID-19 vaccination in the US from December 2020 to August 2021, 2022).
The info above was taken from the VAERS database, of which all of the reports were verified by the CDC (permanent VAERS number), and typically 86% of the reports are filed by doctors, coroners, and manufacturers. False reports are punishable for federal law.
Another researcher found that the frequency of myocarditis has increased to 90 per million, using VAERS and V-Safe data (SARS-CoV-2 mRNA vaccination-associated myocarditis in Children Ages 12-17, 2021).
Another researcher since discovered that the true frequency of myocarditis in this age group has increased to 377 per million for males after second dose of COVID vaccination:
“Conclusion We identified additional valid cases of myopericarditis following an mRNA vaccination that would be missed by the VSD’s search algorithm, which depends on select hospital discharge diagnosis codes. The true incidence of myopericarditis is markedly higher than the incidence reported to US advisory committees. The VSD should validate its search algorithm to improve its sensitivity for myopericarditis.” (Risk of Myopericarditis following COVID-19 mRNA vaccination in a large integrated health system, 2021).
Other papers like Myopericarditis after the Pfizer messenger ribonucleic acid coronavirus disease vaccine in adolescents, 2021, and clinically suspected myocarditis temporally related to covid-19 vaccination in adolescents, are completed using data from hospitalization, such as MRIs, etc.
Although the highest number of cases were found in ages 18-24, another paper found that the incidence since COVID vaccines extends all the way to 50, and other researchers now show it occurs up to 60 years of age (A report on myocarditis adverse events in the U.S. vaccine adverse events reporting system (VAERS) in association with COVID-19 injectable biological products, 2021). The symptoms shown in these papers are deceptive, and the vast majority have major heart damage according to MRI.
A study tried to claim that the incidence of myocarditits was more frequent in those who have the COVID infection, vs. those who received the vaccines, however, the study was using ICD that are not indicated specifically for myocarditis.
There is an underreporting factor of 5 to 20+ in VAERS – find the information here.
Harvard established, according to review of real patient data, that vaccine injuries are underreported, and that less than 1% are actually reported.