Hello, vaccine is a heterogeneous protein to human body, which is easy to cause allergic reaction. Fever is the most common reaction and the lightest one.
Suggestion:
If the child has a fever below 38 degrees, if he is in a good mental state and has a fever, he should apply antipyretic drugs on his forehead, wipe his body with warm water, and regularly give the child warm water and supplement some fruits with more vitamin C. If the fever is above 38 degrees, it is recommended to take medication, such as Xiaoyan antipyretic mixture, Xiaoer Merrill syrup and ibuprofen suspension. And pay attention to measuring his temperature. Go to the hospital if necessary. I wish your child a healthy growth.