The 13-valent pneumonia vaccine is a vaccine for the prevention of pneumonia in infants and children under 2 years of age. Many babies have fever after receiving the vaccine, often due to adverse reactions to pneumonia. Because the 13-valent pneumonia vaccine itself is injected into the body after inactivation of the pathogen, fever may occur during the process of antibody production. Some babies may have fever due to shock during vaccination, so massage the baby to relax and the symptoms will gradually improve. Finally, upper respiratory tract infections occur after vaccination, which require medication.