Parents can use the following measures to deal with children who have fever after vaccination. First of all, you need to give children timely physical cooling, drink plenty of warm water can be. This is because immunization can cause allergic or immune reactions in children. Fever in newborns is caused by a normal immune response. As long as the child’s mental state is relatively good, parents only need to give the child physical cooling or drink more water. The fever will usually subside after 2-3 days. Secondly, children should be given medication in a timely manner. If the child’s fever is more than 38.5℃ and the mental state is poor, you can give the child a blood test. If the white blood cells are very high, the child can be treated with antipyretic drugs. You can give the child timely application of antipyretic drugs and antibiotics for treatment.