I got my PMR after the Pfizer vaccine and I feel that it triggered the disease. Since my late 30's I got a yearly flu shot because I worked in health care. It wasn't required but was strongly encouraged by every employer. It seemed like the right thing to do to prevent my being a carrier and giving someone the disease. I also took every vaccine that was offered: shingles, pneumonia, tetanus, hepatitis b, etc. About half the time the flu shots would make me ill for a couple of days. My theory is that it was too many vaccines for my immune system to handle and the Pfizer was the final straw. I probably have a genetic predisposition as well. My father had PMR and GCA. I have northern European heritage, which is a risk factor. My Ancestry DNA test lists England, Germany and Scandinavia as the top regions where my ancestors were from. No vaccines for me for now.