STEMI Mimic: Focal Myocarditis in an Adolescent Patient After mRNA COVID-19 Vaccine.

Background: In May 2021, the U.S. Food and Drug Administration expanded the Emergency Use Authorization for the Pfizer-BioNTech mRNA Coronavirus disease 2019 (COVID-19) Vaccine (BNT162b2) to include adolescents 12-15 years of age.