text: Myocarditis and Pericarditis Following mRNA COVID 19 Vaccination What Do We Know So Far This is a cross sectional study of 29 published cases of acute myopericarditis following COVID 19 mRNA vaccination The most common presentation was chest pain within 1 5 days after the second dose of mRNA COVID 19 vaccination All patients had an elevated troponin Cardiac magnetic resonance imaging revealed late gadolinium enhancement consistent with myocarditis in 69 of cases All patients recovered clinically rapidly within 1 3 weeks Most patients were treated with non steroidal anti inflammatory drugs for symptomatic relief and 4 received intravenous immune globulin and corticosteroids We speculate a possible causal relationship between vaccine administration and myocarditis The data from our analysis confirms that all myocarditis and pericarditis cases are mild and resolve within a few days to few weeks The bottom line is that the risk of cardiac complications among children and adults due to severe acute respiratory syndrome coronavirus 2 SARS CoV 2 infection far exceeds the minimal and rare risks of vaccination related transient myocardial or pericardial inflammation 