Presumably every team is vaccinated.
Thus every team should have players pass out and convulse.
Many viruses as well as these vaccines are known to produce clinically significant myocarditis. Do you think it is possible that most vaccinated will get a very mild case of myocarditis but is exacerbated by any type of exercise in certain people?
It would interesting to see if there is some early evidence (even though not conclusive) of low grade myocarditis post vaccination.
Do you know if any group is studying this?