Cardiovascular effects were found in 29.24% of children patients, ranging from tachycardia, palpitation, and myopericarditis.
7 myocarditis out of 301 children vaccinated in this prospective Thai study, i.e. 2.32%.
Two schools aged 13–18 years who received the second dose of the BNT162b2 mRNA COVID-19 vaccine.
Cardiovascular Effects of the BNT162b2 mRNA COVID-19 Vaccine in Adolescents
https://www.preprints.org/manuscript/202208.0151/v1