Some eight-month-old babies may develop a fever after the leprosy vaccination. At this time, parents need to observe the baby’s mental state, whether he or she is still eating, playing and sleeping normally. If everything is normal, you can temporarily not worry too much, just pay close attention. If your baby has a fever after the leprosy vaccination, you should give him/her more hot water and pay attention to cooling the temperature. Usually, the body temperature rarely exceeds 38.5℃ after vaccination. If your baby’s temperature is lower than 38.5℃, try not to let your baby take fever-reducing medicine, and you can give your baby a fever-reducing patch as well as a bath with warm water. If by the 3rd day, the temperature still does not drop or continues to rise, it is advisable to visit the hospital to get a blood test. Immunization is a heterogeneous protein vaccination, so some babies may experience discomfort, such as low fever, nausea, vomiting and headache. These symptoms usually appear 24 hours after the vaccination and disappear on their own in 2-3 days, while the baby’s fever after the vaccination may be a reaction to the vaccination. After receiving leprosy vaccine, there may be some other adverse reactions, and the above-mentioned fever is only one of them. The idiosyncrasies of the baby’s physique or other factors can aggravate the reaction, so before taking the baby to the vaccination, parents should be prepared as follows: 1. To understand what vaccine the baby is to receive this time. Some vaccines are to be administered several times, so if the baby had a more serious adverse reaction, such as high fever or allergic reaction, the last time he or she received this vaccine, tell the doctor to see if the vaccine can still be administered this time. If not, ask when the baby can be vaccinated for the second time. 2.It is necessary to explain to the doctor the health condition of the baby, such as whether the baby is a premature baby, malnourished, allergic and whether he/she is in the stage of catching a cold or taking medicine. 3.After vaccination, you can observe the baby at the vaccination site for half an hour and do not leave immediately. 4.Inoculation in strict accordance with the regulations. Babies are given “Vaccination Certificate” after birth, and any vaccination should be given strictly according to the manual and on time.