a fever isn't an illness -- it's just a symptom of one. usually if your baby has a fever it means he or she has picked up a cold or other viral infection. less commonly in infants a fever is a sign of a bacterial infection such as a urinary tract infection. more rarely the infection is something serious like meningitis. other causes of fever in babies include: reaction to a vaccination. becoming overheated from being dressed too warmly or spending time outside on a hot day.
what causes infant fevers?