The third injection of 13-valent pneumonia can be delayed by one month. The routine vaccination process for the 13-valent pneumonia vaccine is 2 months, 4 months, 6 months of age, and 1 injection at 12 to 15 months of age. The third vaccination needs to be given at the 6th month. If your child has a cold, runny nose, or fever, you can appropriately delay the third injection by one month at the latest. The third injection of the 13-valent pneumonia vaccine can be delayed by up to one month without affecting the action of the vaccine in any way. Since delaying the third injection of the vaccine by one month will not have some effect on its production of antibodies, the third injection will be given at the latest when the baby is seven months old. It is important to prepare for the vaccine before it is given, under the guidance of the doctor, and within the prescribed time frame, and try not to delay it in order to strengthen your child’s immune system.