v. t. [ imp. & p. p. Vaccinated p. pr. & vb. n. Vaccinating. ] [ See Vaccine. ] To inoculate with the cowpox by means of a virus, called vaccine, taken either directly or indirectly from cows; now, generally, to administer (by injection or otherwise) any vaccine with the objective of rendering the recipient immune to an infectious disease. One who has been thus immunized by vaccination is said to be vaccinated against a particular disease. One may be thus immunized (vaccinated) also by oral ingestion or inhalation of a vaccine. [ 1913 Webster +PJC ]
n. 1. The act, art, or practice of vaccinating, or inoculating with the cowpox, in order to prevent or mitigate an attack of smallpox. Cf. Inoculation. [ 1913 Webster ]
☞ In recent use, vaccination sometimes includes inoculation with any virus as a preventive measure; as, vaccination against cholera. [ 1913 Webster ]
2. Any inoculation intended to raise immunity to a disease. [ PJC ]
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