What is Immunity? - Vaccines and Your Baby - The Children's Hospital of Philadelphia (3 of 14)

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Uploaded by on Nov 9, 2009

Paul Offit, MD, explains how children become immune to diseases through vaccination.

Vaccines and Your Baby explains the basics of vaccines. You'll learn about vaccines and how they work, the science behind vaccines, immunity, and the diseases that vaccines prevent. Parents of children who suffered vaccine-preventable diseases tell their stories.

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