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vaccine
(redirected from dead vaccine)

   Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia 0.02 sec.

vaccine

Any preparation of modified pathogens (viruses or bacteria) that is introduced into the body, usually either orally or by a hypodermic syringe, to induce the specific antibody reaction that produces immunity against a particular disease.

In 1796 Edward Jenner was the first to inoculate a child successfully with cowpox virus to produce immunity to smallpox. His method, the application of an infective agent to an abraded skin surface, is still used in smallpox inoculation.



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Flu shots, which use a dead vaccine, can't cause the flu, but on occasion cause some reaction, most commonly redness, soreness and swelling at the site of the shot.
``It's a dead vaccine and it can't transmit influenza,'' she said.
Shots aside, however,Fannin and other officials worry that the dead vaccine won't give the same blanket protection as the live vaccine, which can "cross-vaccinate": In the same way the weakened virus can cause polio in people with significant immunity deficiencies, it can also spread its effectiveness from a child who has recently been immunized with the live vaccine to one who has not.
 
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