I find this interesting. I had my 2 Shingrix vaccination shots this year, both in my left arm. (I am right handed.) Following the 2nd one in August, I have experienced reduced range of motion reaching my left arm up behind my back, plus some weakness and general soreness in that arm that I could not account for. I suspected that it might be related to the vaccination based on when the symptoms appeared, but had not found mention of the this when reviewing adverse reactions on the Shingrix web site.