Kim et al.: "Patients With Acute Myocarditis Following mRNA COVID-19 Vaccination"; of 7 patients with acute myocarditis, 4 happened within 5 days COVID-19 vaccine (February 1 & April 30 2021); all 4

patients got 2nd dose mRNA vaxx & presented with severe chest pain, had biomarker evidence of myocardial injury, hospitalized with cardiac magnetic resonance imaging findings typical of myocarditis

SOURCE:

https://jamanetwork.com/journals/jamacardiology/fullarticle/2781602

‘In the 3-month period between February 1 and April 30, 2021, 7 patients with acute myocarditis were identified, of which 4 occurred within 5 days of COVID-19 vaccination. Three were younger male individuals (age, 23-36 years) and 1 was a 70-year-old female individual. All 4 had received the second dose of an mRNA vaccine (2 received mRNA-1273 [Moderna], and 2 received BNT162b2 [Pfizer]). All presented with severe chest pain, had biomarker evidence of myocardial injury, and were hospitalized.

Coincident testing for COVID-19 and respiratory viruses provided no alternative explanation. Cardiac magnetic resonance imaging findings were typical for myocarditis, including regional dysfunction, late gadolinium enhancement, and elevated native T1 and T2.’