Children receive most of their immunizations between birth and 6 years of age, the outline of which will be given to you by your pediatrician. However, you can expect your child to receive vaccinations around the following age markers: • Between birth and 2 months • 4 months • 6 months • Between 12 months - 18 months • Between 4 - 6 years old Vaccines are comprised of weakened or dead diseases that the immune system can fight off easily. By introducing these weakened versions of the disease into the body, the immune system can better fight off similar bacteria in the future.