Apr 6, 2014
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IMMUNE PERSON/ANIMAL

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A person or animal that possesses specific previous antibodies or cellular immunity as a result of previous infection or immunisation, or is so conditioned by such previous specific experience as to respond adequately with production of antibodies sufficient to prevent illness following exposure to the specific infectious agent of the disease. Immunity is relative; an ordinarily effective protection may be overwhelmed by an excessive dose of the infectious agent or an unusual portal of entry.

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