How does the child have a fever repeatedly after making second encephalitis vaccine to do two years

Because the vaccine itself belongs to a small virus, after the injection of the vaccine may cause the child's resistance to reduce, resulting in fever symptoms. It is recommended to symptomatic treatment at this time, measure the child's temperature. If it is lower than 38.5 degrees, physical cooling, higher than 38.5 degrees, give the child oral antipyretic, and to seek medical treatment in time.