New autopsy study finds myocarditis as the sole plausible cause in 4 out of 25 cases of sudden death within 20 days after vaccination
Autopsy-based histopathological characterization of myocarditis after anti-SARS-CoV-2-vaccination https://link.springer.com/article/10.1007/s00392-022-02129-5
Somewhat unfortunately, this study did not use the immunohistochemistry technique for detecting vaccine-induced spike protein expression which was developed and demonstrated by Michael Moerz in his recent case report
A Case Report: Multifocal Necrotizing Encephalitis and Myocarditis after BNT162b2 mRNA Vaccination against COVID-19 https://www.mdpi.com/2076-393X/10/10/1651
Nevertheless, the new study makes it quite clear that myocarditis is a very serious concern with mRNA vaccines. This also agrees with a recent report from Switzerland, which found laboratory parameters of heart muscle damage increased in 2.8% of a large group of people who had received their third shot:
Incidence non négligeable des myocardites après 3ème dose de vaccin à ARN messager anti-COVID 19 https://www.cardio-online.fr/Actualites/A-la-une/ESC-2022/Incidence-non-negligeable-myocardites-apres-3-dose-vaccin-ARN-messager-anti-COVID-19