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vaccine |
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vaccineAny 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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| An inactivated vaccine that induces not only high levels of neutralizing antibody to surface proteins but also CD8 T-cell response against well-conserved antigens derived from internal viral proteins might provide superior protection in an epidemic or pandemic. The product is a ready-to-use, inactivated vaccine that can be used in any cow, bull or calf in any stage of production. This will reduce by approximately one half the expected supply of trivalent inactivated vaccine (flu shot) available in the United States for the 2004-05 influenza season. |
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inactivated vaccine