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  • Vaccination JAMA
    Inoculation of a substance (vaccine) into the body for the purpose of producing active immunity against a disease. The vaccine is usually a weakened culture of the agent causing the disease; the use of vaccines is a cornerstone of preventive medicine. Vaccination was used in ancient times in China, India, and Persia, and was introduced to the West in the late 18th century by Edward Jenner. Vaccinations have eradicated smallpox and are used today to prevent diphtheria, poliomyelitis, rabies, and typhoid. Experimental vaccines for certain cancers have been developed for laboratory mice. See also Inoculation.
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