It is mandatory to put our findings into perspective with the incidence and extent of myocardial injury associated with COVID-19 infection. Before the COVID-19 vaccine were available, the incidence and extent of myocardial injury associated with COVID-19 infection was much higher than observed in this active surveillance study after booster vaccination.
In other words, it's got nothing to do with the vaccine specifically. It may have to do with the proteins the virus possesses and the vaccine promotes the production of.