Re-post due to competing story: Li et al.: "Intravenous Injection of Coronavirus Disease 2019 (COVID-19) mRNA Vaccine Can Induce Acute Myopericarditis in Mouse Model"; in vivo evidence that
by Paul Alexander
intravenous injection of COVID-19 mRNA vaccines may induce myopericarditis."; histopathological changes of myopericarditis evidenced by cardiomyocyte degeneration, apoptosis & necrosis etc.