| http://www.w3.org/ns/prov#value | - PRINT DefinitionImagesHepatitis A immunization (vaccine)ImmunizationsImmunization (vaccination) is a way to improve your immune system and prevent serious, life-threatening diseases.See also: Babies and shotsAlternative NamesVaccinationsInformationHOW IMMUNIZATIONS WORKImmunizations teach your body how to defend itself when germs such as viruses or bacteria invade it.They expose you to a very smal
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