I believe, although no doctor can conform positively, that I contracted PMR a week after my 4th Covid vaccine. I slowly tapered from prednisone over the course of a year. Been about a year out from taking Predisone. Some people have commented that because it lasted only a year, it might have been vaccine induced. I guess we will never know but I am now leery of taking anymore vaccines. I know it is in remission and I want it to stay that way.