Hi
As a type 2 diabetic I have had the jab for the last 3 - 4 years, I had mine last friday, always have slight side effects, but never the same, this year I felt slightly shivery and cold, though that has for the most part now passed.
My 85 year old mum never has any side effects just a slightly sore arm.
I'm mid 50's so try to have it every year. My wife too. She felt fine, I felt a bit nauseous and a bit shivery the next day. Glad I had it as I'd like to avoid having something nasty if I can avoid at a time when I want my immune system & respiratory bits in as good a working order as possible.......