Single stranded RNA activates Toll-like receptor mediated imflammatory response. They use modified RNA in the vaccine to mitigate this but obviously it’s is not 100% effective.
I had EKG on Friday as part of my routine 6 month medical evaluation. Heart, liver, kidneys, lungs are all in great shape based on blood work at Quest labs. My first jab was in Feb 2021, 4th Jan in April this year. Planning my 5th jab in December in preparation for my 6th cruise since starting the jabs.