Attenuated vaccine

An attenuated vaccine is a vaccine created by reducing the virulence of a pathogen, but still keeping it viable (or "live"). Attenuation takes an infectious agent and alters it so that it becomes harmless or less virulent. These vaccines contrast to those produced by "killing" the virus (inactivated vaccine). ==Examples== Examples of "live" ...
Found on http://en.wikipedia.org/wiki/Attenuated_vaccine

attenuated vaccine

Live pathogens that have lost their virulence but are still capable of inducing a protective immune response to the virulent forms of the pathogen, e.g., Sabin polio vaccine. ... (05 Mar 2000) ...
Found on http://www.mondofacto.com/facts/dictionary?attenuated+vaccine

attenuated vaccine

a vaccine prepared from live microorganisms or viruses cultured under adverse conditions, leading to loss of their virulence but retention of their ability to induce protective immunity.
Found on http://www.encyclo.co.uk/local/21001

Attenuated Vaccine

A vaccine that is prepared from live bacteria or viruses, that have been weakened through a chemical process so they produce immunity but do not actually cause the disease.
Found on http://www.pregnology.com/AZ/A/10

attenuated vaccine

Type: Term Definitions: 1. live pathogens that have lost their virulence but are still capable of inducing a protective immune response to the virulent forms of the pathogen, Sabin polio vaccine.
Found on http://www.medilexicon.com/medicaldictionary.php?t=96394
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