Vaccination can be used to prevent an illness in a person. Explain how a vaccination can prevent an illness. – 7025

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1. A vaccine contains a dead or inactive pathogen.
   It is put into the body.
   White blood cells spot it and make antibodies.
   The antibodies are specific to that pathogen.
   If the real pathogen comes again, the body makes antibodies faster and in larger amounts,
   so it can kill the pathogen quickly.

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