What should you do if your five-month-old baby has a fever? As parents, we are always worried when our baby has a fever. Especially five-month-old babies are more susceptible to viral infections because their immune systems are not yet complete. So what should we do when our baby has a fever? The first aspect: observe the changes in body temperature. When the baby has a fever, we must first observe the changes in the baby\’s body temperature. Generally speaking, normal body temperature is 36℃-37.5℃. When the baby\’s body temperature reaches above 38℃,