Sorry to hear of your loss.

I can't prove the connection, my wife's uncle went and forced his way to the front of the line for both covid shots. He already had a heart surgery scheduled that was to add a stint to his heart or something (minor for heart surgery was what stuck). About a month later does the check up before surgery and it required a quadruple bypass.

I've been stuck with the lingering question if the shot actually made it so his minor surgery shifted to the need for major surgery.