Vaccine Myocarditis Update

BY ANISH KOKA The European Medicines Agency decided on July 19, 2021 that myocarditis and pericarditis be added to the list of adverse effects of both messenger RNA (mRNA) based vaccines (BNT162b2 [Pfizer-BioNTech] and mrna-1273 [Moderna]) against COVID-19. This advice was based on numerous reports of myocarditis that followed a clinical pattern that strongly suggested a causal link between these particular vaccines and myocarditis/pericarditis. The adverse events that appeared to be predominantly in young men typically occurred within a week after injection, and were clustered after the second dose of the vaccine series. A recent national database from France sheds some light on the approximate rates of mrna vaccine related myocarditis. Between May 12, 2021 and October 31, 2021 within a population of 32 million persons aged 12-50 years, 21 million first doses of the BNT162b2 (Pfizer) vaccine and 2.86 million first doses of the mrna-1273 (Moderna) vaccine. In the same period, 1612 cases of myocarditis and 1613 cases of pericarditis with myocarditis were recorded in France. Compared to matched control subjects, the risk of myocarditis was markedly increased after 1st and 2nd doses of the vaccine. For the Pfizer vaccine, the odds of myocarditis were 1.8 times the expected background rate for the 1st dose and 8 times the expected background rate for the 2nd dose. The Moderna vaccine, which delivers about three times the dose of the Pfizer vaccine has an even higher risk of...
Source: The Health Care Blog - Category: Consumer Health News Authors: Tags: COVID-19 Health Policy Uncategorized Anish Koka cardiology Source Type: blogs