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How Vaccines Help (Video)

Medically reviewed by: KidsHealth Medical Experts

Vaccines keep millions of people healthy each year by preparing the body to fight illness. Learn how vaccines help and get answers to your biggest questions.

  • How Vaccines Help

    How Vaccines Help

    Vaccines keep millions of people healthy each year by preparing the body to fight illness. Learn how vaccines help and get answers to your biggest questions about vaccines.

Medically reviewed by: KidsHealth Medical Experts