Rates of mycarditis/pericarditis in Israel is usually around 1/50,000. Since the onset of vaccination the rate of myocarditis/pericarditis increased to 1/5000.
The Ministry of Health in Israel just filed this statement with the press:
There is some probability for a possible link between the second vaccine dose and the onset of myocarditis among young men aged 16 to 30. This link was found to be stronger among the younger age group, 16 to 19, compared to other age groups. This link became weaker the older the vaccinated individual is. In most cases myocarditis took the form of mild illness that passed within a few days.
The recommendation to vaccinate teenagers aged 12-15 shall be discussed in the forum of the Pandemic Containment Task-Force and submitted to the approval of the Ministry of Health's Director General. We shall issue a public update once a decision has been made.
https://www.gov.il/en/departments/news/01062021-03