Not sure what JamaCardiology is. Also, the article referenced in the above link appears to be a test done on athletes that had COVID infection. So if we're talking about what damage is caused by the vaccine not sure this study is relevant. It would be nice if the doctor mentioning the 50% number could give a link to the study he's referring to.
One of the replies links to this article which says the number is only 2.3%.
https://jamanetwork.com/journals/jamacardiology/fullarticle/2780548
Not sure what JamaCardiology is. Also, the article referenced in the above link appears to be a test done on athletes that had COVID infection. So if we're talking about what damage is caused by the vaccine not sure this study is relevant. It would be nice if the doctor mentioning the 50% number could give a link to the study he's referring to.