Video via Dr. John Campbell

References:

Cardiovascular Effects of the BNT162b2 mRNA COVID-19 Vaccine in Adolescents

Myocarditis and Sudden Cardiac Death in the Young

Incidence, risk factors, natural history, and hypothesised mechanisms of myocarditis and pericarditis following covid-19 vaccination: living evidence syntheses and review

CDC: Vaccines for COVID-19

CDC: COVID-19 Vaccines for Children and Teens

Related:

Vaccine myocarditis update from Thailand