Oster et al. "Myocarditis Cases Reported After mRNA-Based COVID-19 Vaccination in the US From December 2020 to August 2021"; I remind with this paper about the danger of these vaccines to males

by Paul Alexander

There is risk to females also, the ratio is 9:1.

Myocarditis Cases Reported After mRNA-Based COVID-19 Vaccination in the US From December 2020 to August 2021

But the key aspect in the abstract I wish to highlight for it sums it up well:

“In this descriptive study of 1626 cases of myocarditis in a national passive reporting system, the crude reporting rates within 7 days after vaccination exceeded the expected rates across multiple age and sex strata. The rates of myocarditis cases were highest after the second vaccination dose in adolescent males aged 12 to 15 years (70.7 per million doses of the BNT162b2 vaccine), in adolescent males aged 16 to 17 years (105.9 per million doses of the BNT162b2 vaccine), and in young men aged 18 to 24 years (52.4 and 56.3 per million doses of the BNT162b2 vaccine and the mRNA-1273 vaccine, respectively).

Meaning  Based on passive surveillance reporting in the US, the risk of myocarditis after receiving mRNA-based COVID-19 vaccines was increased across multiple age and sex strata and was highest after the second vaccination dose in adolescent males and young men.” 

This next study also shows the devastating consequence of the vaccines in 2 teen boys, whereby it is almost statistically impossible for 2 healthy young teens to die in their sleep:

Autopsy Histopathologic Cardiac Findings in Two Adolescents Following The Second COVID-19 Vaccine Dose