I also attribute having PMR to the vaccine. Within 24 hours of having the first dose, I was in serious pain. At first I was diagnosed with Reactive Arthritis which has been reported to result from the vaccine. Took prednisone. Got better until I stopped the prednisone and was back to severe pain. Finally, the PCP ordered CRP and Sed tests. CRP was 85. I've been on prednisone since last February. The rheumatologist said there aren't data yet about the vaccine causing PMR. Could be coincidental. I'm a Caucasian female, age 81, so a good candidate for PMR. Talked with both the PCP and the rheumatologist about getting the 2nd shot. Finally measured my antibody level and I have sufficient antibodies that for now no second shot. We're waiting until we know more. I am worried about the second shot causing the PMR to flare up and require my going to a higher dose of prednisone. Right now I'm at 9 mg per day and doing reasonably well with help from some acetaminophen. The rheumatologist would like me to be at or below 5 mg/day before getting the second shot.