MYocarditis and/or Pericarditis Following mRNA COVID-19 VACCination National Surveillance Study

Stand of care ECG, Holter, MRI, ECHO, Quality of life questionnaire will be used to follow the clinical outcomes and patient reported outcomes to assess for study objectives

Only baseline quality of life questionnaires will be utilized in the alternative etiology myocarditis cohort as they will not be followed up in the study