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what is vaccination?
Vaccination involves exposing the body’s immune system to a weakened or harmless version of the pathogen in order to stimulate white blood cells to produce antibodies. Vaccination involves putting a small amount of an inactive form of a pathogen into the body. Vaccines can contain:

    live pathogens treated to make them harmless
    harmless fragments of the pathogen
    toxins produced by pathogens
    dead pathogens.


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