My husband works for the VA, and he had his Pfizer

My husband works for the VA, and he had his Pfizer booster along with his Flu shot on Wed. He ended up having to go in to see his Dr on Fri after he had a fever and a mild shingles reaction. Although he’s already had the two shingles vaccine doses last year, his Dr said it was most likely a result of the Pfizer booster.