vaccine

5 ENTRIES FOUND:

vac·cine

noun \vak-ˈsēn, ˈvak-ˌ\

medical : a substance that is usually injected into a person or animal to protect against a particular disease

Full Definition of VACCINE

:  a preparation of killed microorganisms, living attenuated organisms, or living fully virulent organisms that is administered to produce or artificially increase immunity to a particular disease
vaccine adjective

Origin of VACCINE

French vaccin, from vaccine cowpox, from New Latin vaccina (in variolae vaccinae cowpox), from Latin, feminine of vaccinus, adjective, of or from cows, from vacca cow; akin to Sanskrit vaśa cow
First Known Use: 1813

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vac·cine

noun \vak-ˈsēn, ˈvak-ˌ\   (Medical Dictionary)

Medical Definition of VACCINE

1
: matter or a preparation containing the virus of cowpox used to vaccinate a person against smallpox
2
: a preparation of killed microorganisms, living attenuated organisms, or living fully virulent organisms that is administered to produce or artificially increase immunity to a particular disease <chicken pox vaccine>; also : a mixture of several such vaccines <measles-mumps-rubella vaccine>

vaccine

noun    (Concise Encyclopedia)

Preparation containing either killed or weakened live microorganisms or their toxins, introduced by mouth, by injection, or by nasal spray to stimulate production of antibodies against an infectious agent. This confers immunity to that agent, since the B lymphocytes remain sensitized to it and respond to later infection by producing more antibodies. The first vaccine, against smallpox, was introduced by Edward Jenner in 1798. Vaccines have been developed against diseases caused by bacteria (e.g., typhoid, whooping cough, tuberculosis) and by viruses (e.g., measles, influenza, rabies, poliomyelitis). Effectiveness varies, and a small percentage of people have adverse reactions. Those with immunodeficiency disorders should not receive live vaccines.

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