Is myocarditis a serious concern for you ? in regards to the mrna vaccines? also, the efficiency of the pfizer vaccine, in particular? in israel, they have a huge surge and a lot of their adult population is vaccinated, half of serious are vaccinate?

Myocarditis very uncommon but has been associated with Pfizer vaccine in particular. Seriousness can range from trivial to very serious. You need to see a cardiologist to determine. (Consequences of coronavirus infection far more common and potentially far worse). Yes, Israel having a “huge surge”of infection - overwhelmingly asymptomatic or minimal symptoms. Not running out of ICU beds

Following full vaccination with any of the 3 USA vaccines, the stated number of breakthrough infections is 1 in 28,000, according to the data provided by HT. And vast majority of these are mild and not hospitalized. I would hope you would not get alarmed by rare side effects and obtain vaccination, as COVID-19 infection consequences remain dire in many people.