Having a personal experience with this, I now strongly suspect that we have a severe gap in data collection, and failures of the medical system where I'm at to

Having a personal experience with this, I now strongly suspect that we have a severe gap in data collection, and failures of the medical system where I'm at to properly capture side effects. This might be in part because of medical professional cultural hesitancy to attribute effects to vaccination. The bucketing of symptoms may also affect this, not all heart related side effects are myocarditis, but that's what everyone is looking at. In my case, with no prior history of any heart conditions, I experienced a racing heartbeat, crushing chest pain and pain that radiated from my chest to my head beginning 2-3 days after the vaccination. Doctors I saw were generally skeptical that this could be caused by the vaccine; their first instinct was to discount any possibility that it might be vaccine related. I'm now significantly more distrustful of public vaccination campaigns for covid-19, and the side effect data for such. There seems to be a strong incentive, or some underlying cultural bias to underreport this.