Well my jaw aches and I dribble down one side after a filling anaesthetic. I often got a big bruise after giving blood or after a blood test. I've had lots of risky X-rays. I've just spent four days with a headache and bellyache taking an antibiotic that is hopefully making me get better.

All these things are just like having any jab. They are medical interventions. They are not exactly what our physiology expects. A reaction is not unlikely. But the science has gone to great lengths to demonstrate that the jabs are safe. You're far more likely to die in the dentist's chair. We don't need this constant emphasis on the negatives.