vaccine side effect; adverse reaction to a vaccine
Medical term specifically for undesirable reactions following vaccination, distinct from general drug side effects (副作用).
Fever and headache have been reported as side effects after vaccination.
If you have a strong vaccine side effect, please consult a doctor.
side reaction
Chemistry term for an unintended reaction that occurs alongside the main reaction.
In this synthesis, there are many side reactions, so the yield is low.
After getting the vaccine, I had a mild side effect.
Side effects from the vaccination can sometimes occur.
I reported the post-vaccination side effect to my doctor.
By changing the catalyst, we were able to suppress the side reaction.