My sister is going to be running the Boston Marathon in a few months. She's been vaxed. I'm tempted to talk her out of it citing these heart injury prevalence in athletes who do extreme cardio, but i think the likelihood she drops out is close to 0 and I don't know if it's worth creating that rift between us. Though if something happened to her and I said nothing, I would feel awful. ThoThoughts
By that time, you will have a lot more supporting data, I would wait a while provided she doesn't run any other marathons before then.