Janssen COVID-19 vaccine-related acute myocarditis
Introduction: according to reports, there is a link between the development of myocarditis and the use of coronavirus vaccines. Case presentation: we present two cases of male adolescents aged 19 and 49 who developed acute myocarditis within a few days after receiving the second dose of the Janssen vaccine. They presented with acute chest pain, elevated troponins, and ST elevations in the precordial leads without reciprocal changes. Although there is no formal evidence, the presentation patterns and clinical course are associated with the COVID-19 vaccine. Myocarditis was confirmed by cardiac magnetic resonance. During their hospitalization, both patients' hemodynamic status remained stable. There was no evidence of an infectious or autoimmune etiology. Conclusions: myocarditis is a rare complication following SARS-CoV-2 vaccination and benefits of vaccination outweigh the risks and should not be avoided, especially for patients with underlying heart disease.