Oral polio vaccine drops are generally free of side effects, with individuals experiencing fever, nausea, vomiting, diarrhea, and rash. No special treatment is usually required, and symptomatic treatment is available if necessary. Mild local reactions at the injection site – pain, erythema (redness of the skin), hard nodules – and moderate transient fever can subside and recover after two or three days. If the body temperature does not exceed 38.5°C, there is no need to apply antipyretic drugs. You can use physical cooling, warm bath and drink more water to help lower the body temperature. Eat some fruits and vegetables appropriately and continue to observe. If the body temperature exceeds 38.5℃, you need to take a warm bath or ice towel on the forehead and apply it externally in the armpit. If it persists, you can take acetaminophen or ibuprofen suspension orally. Pay attention to retest the temperature, and if it still does not improve after two or three days, promptly go to the hospital. The above content is for reference only. Please refer to the doctor’s instructions for specific medication and treatment.