I'll start by saying that I'm very pro-vaccine for reducing/eliminating dangerous epidemic diseases -- this is why I put my name forward as a trial Covid19 vaccine volunteer.
However, it seems that phase 3 trials do not want participants with arrhythmias (I've been turned down twice after ticking that box). Now phase 3 is the last stage before general use of the vaccine (if approved). So it looks like it (or they) will be untested in our large group of the population, arguably some of those who need it most.
This is my personal experience - so please correct me if I'm wrong - any of you with arrhythmias declared such and been accepted as vaccine trial participants?