Low fever after vaccination in infants is usually caused by the body’s immune response after vaccination, you can drink more water and physical cooling. Low fever after vaccination is a common reaction in infants, there is no need to worry too much, you can observe at home for a while. Parents can give infants more water, or use wet towels to wipe the armpits, limbs, neck, groin and other locations, physical cooling, is conducive to reducing fever. If the infant has a low fever all the time after vaccination, and has symptoms such as loss of spirit and appetite, parents need to take the infant to the hospital immediately for examination to determine whether there is vaccine poisoning and other conditions. Infant vaccination, to ensure that the infant is in a healthy state, if the infant has fever, cough and other symptoms, you need to suspend the vaccination. After vaccination, parents should pay attention to observe the vital signs and mental state of the infant, if there are any abnormalities, it is necessary to go to the hospital for examination in a timely manner.