We got rid of the control group, I wonder if that was smart.
Early 50's, caught original (& symptomatic) Rona early on. Heart seems fine.
Son (also control group) caught COVID recently, recovered, heart seems fine.
Wife had a vaccine so not in the control group - had an adverse reaction to it and stopped at jab #1.
You could of course argue that in all respects that matter for the risk of heart disease, people who take vaccines are the same as people who don't. I would disagree, and only a bet could settle the difference.