There is a lot of studies on this topic. Somehow not covered in media. Which makes me even more curious.

Gill J.R. et al: Autopsy Histopathologic Cardiac Findings in 2 Adolescents Following the Second COVID-19 Vaccine Dose, Arch Pathol Lab Med (2022) 146 (8):925-929 https://meridian.allenpress.com/aplm/article/146/8/925/47778...

Risks of myocarditis, pericarditis, and cardiac arrhythmias associated with COVID-19 vaccination or SARS-CoV-2 infectionhttps://www.nature.com/articles/s41591-021-01630-0#Aff1

Vaccine-Associated Myo/Pericarditis in Adolescents: A Stratified Risk-Benefit Analysis https://onlinelibrary.wiley.com/doi/10.1111/eci.13759

Schauer J. et al: Persistent Cardiac Magnetic Resonance Imaging Finfings in a Cohort of Adolescents with Post-Coronavirus Disease 2019 mRNA Vaccine Myopericarditis, The Journal of Pediatrics, March 25, 2022 https://www.jpeds.com/article/S0022-3476(22)00282-7/fulltext

Chua G.T.et al: Epidemiology of Acute Myocarditis/Pericarditis in Hong Kong Adolescents Following Comirnaty Vaccination, Clin Infect Dis 2022, Sep 10. 75(4):673-681 https://pubmed.ncbi.nlm.nih.gov/34849657/

Le Vu S.et al: Age and sex-specific risks of myokarditis and pericarditis following Covid-19 messenger RNA vaccines, Nat Commun, 2022, 13:3633, 25 Jun 2022 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9233673/

Goddard K.et al: Risk of myokarditis and pericarditis following BT162b2 and mRNA-1273 COVID-19 vaccination, Vaccine 2022, Aug 19, 40(35): 5153-5159 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9273527/

https://www.sst.dk/en/english/corona-eng/vaccination-against...

Bardosh K.et al: COVID-19 Vaccine Boosters for Young Adults: A Risk-Benefit Assessment and Five Ethical Arguments against Mandates at Universities, 12 Sep 2022, preprint https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4206070

Oster M.E. et al: Myocarditis Cases Reported After mRNA-Based COVID-19 Vaccination in the US From December 2020 to August 2021, JAMA 2022,327(4):331-340, 25 Jan 2022 https://jamanetwork.com/journals/jama/fullarticle/2788346

Lai F.T. et al: Carditis After COVID-19 Vaccination With a Messenger RNA Vaccine and an Inactivated Virus Vaccine, Ann Int Med, March 2022 https://www.acpjournals.org/doi/full/10.7326/M21-3700?rfr_da...

Massari M. et al: Postmarketing active surveillance of myokarditis and pericarditis following vaccination with COVID-19 mRNA vaccines in persons aged 12 to 39 years in Italy: A multi-database, self-controlled case series study, Plos Medicine, July 2022 https://pubmed.ncbi.nlm.nih.gov/34849657/

SARS-CoV-2 Vaccination and Myocarditis in a Nordic Cohort Study of 23 Million Residents https://jamanetwork.com/journals/jamacardiology/fullarticle/...

Age and sex-specific risks of myocarditis and pericarditis following Covid-19 messenger RNA vaccines https://www.nature.com/articles/s41467-022-31401-5