Choi et al.: "Myocarditis-induced Sudden Death after BNT162b2 mRNA COVID-19 Vaccination in Korea: Case Report on Histopathological Findings"; present autopsy findings of 22-year-old man who developed

chest pain 5 days after first dose of Pfizer mRNA vaccine & died 7 hours later. Histological examination of the heart revealed isolated atrial myocarditis, with neutrophil & histiocyte predominance

SOURCE:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8524235/?utm_source=substack&utm_medium=email

‘We present autopsy findings of a 22-year-old man who developed chest pain 5 days after the first dose of the BNT162b2 mRNA vaccine and died 7 hours later. Histological examination of the heart revealed isolated atrial myocarditis, with neutrophil and histiocyte predominance. Immunohistochemical C4d staining revealed scattered single-cell necrosis of myocytes which was not accompanied by inflammatory infiltrates. Extensive contraction band necrosis was observed in the atria and ventricles. There was no evidence of microthrombosis or infection in the heart and other organs. The primary cause of death was determined to be myocarditis, causally-associated with the BNT162b2 vaccine.’