Vaccines protect children by working with their body’s natural defenses to help them safely develop immunity to some serious diseases. Learn more about how vaccines work, vaccine ingredients, as well as safety and potential side effects.
The diseases that vaccines prevent can be dangerous, or even deadly—especially in infants and young children. Vaccination is one of the best ways parents can protect their children from 14 diseases before the age of two. Learn more about the recommended immunization schedule to best protect your child.
- Page last reviewed: March 29, 2018
- Page last updated: March 29, 2018
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