The full name of polio vaccine is poliomyelitis vaccine, babies may have fever, nausea and vomiting, diarrhea and other adverse reactions after polio vaccination. Polio vaccine is divided into live attenuated polio vaccine and inactivated polio vaccine. After receiving this vaccine, the body can be stimulated to produce immunity against poliovirus, thus preventing the development of polio. Usually after polio vaccination, babies may have adverse reactions such as pain, redness and hardness at the injection site. In addition, some babies may also have adverse reactions such as excitement, irritability and drowsiness. Usually no special treatment is needed and they may disappear on their own. If your baby is allergic to the ingredients in the polio vaccine, this vaccine is contraindicated. Polio vaccination should be postponed when the baby is suffering from fever or acute illness. Parents are advised to go to regular hospitals for polio vaccination if needed. After vaccination, parents should observe the baby’s condition so that they can consult the doctor in time, and bring the baby back to the hospital in case of any emergencies.