vaccination is a term coined by Edward Jenner for the 1 of administering live, albeit weakened, microbes to patients, with the intent of conferring immunity against a targeted form of a related 2 agent. Vaccination (Latin: vacca-cow) is so named because the first vaccine wa derived from a virus affecting cows: the cowpox virus, a relatively benign virus that, in its 3 form, provides a degree of immunity to smallpox, a contagious and 4 disease. In common speech, vaccination and immunization' generally have the same colloquial meaning.