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Immunization

An immunization, also called a vaccination, is a way to keep you from getting a disease. The medicine causes your body to make antibodies that can then recognize and fight the illness if you are later exposed to it.

Besides keeping you from getting sick, immunizations also help reduce the spread of disease to others and prevent epidemics.

Current as of: May 1, 2026

Author: WebMD Ignite Staff

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All WebMD Ignite education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

News & Events

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Measles in Cincinnati: What Parents Need to Know

Updated September 18, 2026 Written in collaboration with Dr. Leah Welty If you’ve seen recent news about measles cases in Cincinnati,

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