Study shows myocarditis from COVID-19 vaccination carries serious risk of death
Before COVID vaccines were deployed and administered, it was reported that patients with COVID-19 have approximatively 16 times the risk for myocarditis relative to patients without COVID-193. Matched analyses from medical records (Dec 2020 to May 2021) from the largest health care organization in Israel21 showed that COVID-19 vaccination was associated with an elevated risk of myocarditis (risk ratio, 3.24) compared to unvaccinated and SARS-CoV-2 infection was associated with a substantially increased risk of myocarditis (risk ratio, 18.28) compared to uninfected. It was also noted that a significant lower mortality rate was observed among individuals with myocarditis after mRNA vaccination when compared to those with a viral infection–related myocarditis21,22. In line with these results, a more recent study showed that the relative risk of heart failure within 90 days was 0.56 and 1.48 for myocarditis associated with vaccination and COVID-19 disease, respectively23. In summary, compared with myocarditis associated with COVID-19 disease, myocarditis after vaccination with SARS-CoV-2 mRNA vaccines occurs less frequent and in addition is associated with a better clinical outcome23. [...] Le Vu, S. et al. Risk of Myocarditis after Covid-19 mRNA Vaccination: Impact of Booster Dose and Dosing Interval. https://doi.org/10.1101/2022.07.31.22278064 (2022).