• Vaccine: SFAF
    a preparation that contains an infectious agent or its components which is administered to stimulate an immune response that will protect a person from illness due to that agent. A therapeutic (treatment) vaccine is given after infection and is intended to reduce or arrest disease progression. A preventive (prophylactic) vaccine is intended to prevent initial infection. Agents used in vaccines may be whole-killed (inactive), live-attenuated (weakened) or artificially manufactured.
  • Vaccine JAMA
    A substance that contains antigenic components from an infectious organism. By stimulating an immune response (but not disease), it protects against subsequent infection by that organism. See also Antigen; Vaccination.

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