I had the vaccine when it first came out and the next two versions. I had no side effects. The covid vaccine is not a live vaccine. It's possible that the vaccine affected some people to over trigger their immune system but that would be difficult to prove and I don't trust some of these anti vaccine group sponsored studies. Studies that begin with an agenda usually find a way to support their agenda. I do believe that the covid virus can be a factor in PMR and many other inflammatory or autoimmune disorders. I had covid for the second time last June. I had vertigo issues in July and August. I was told that a virus is considered the trigger. I then started what I now know are PMR symptoms in September/October. Viruses can be the trigger for many health issues, and I believe covid was the trigger for mine.