My uncle was injured after his second shot and died after his 3rd

I thought the world of my uncle. He was in really good health for his age. He had lost his wife when she was just 60 (a very youthful, trendy 60 year old). He spent Covid pandemic largely isolated because he was over 70.  In June 2021 he had his second shot. A few days later he was experiencing heart problems. He ended up having a pacemaker fi...