I had 3 Pfizer vaccines then for my 4th I switched to Moderna to "mix it up" and hopefully increase my immunity. Instead, within 2 weeks the stiffness and pain started - 2 months later diagnosed as PMR. It has taken me 1 year to get from 40 mg to 2.5 mg prednisone. Ain't no way I am getting another Covid booster while I still have PMR and am on prednisone. Right now, I am not planning to get another Covid vaccine ever.
I think I am going to skip my annual flu vaccine and the RSV vaccine until I get over PMR or at least get in remission since I guess we live with it forever.
Just my thoughts!

Ginger