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antigenic drift

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antigenic drift [‚an·tə¦jen·ik ′drift]
(immunology)
Minor change of an antigen on the surface of a pathogenic microorganism.


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This strategy, known as antigenic drift, works well as a short-term survival tactic for the virus: the speed with which slight variations develop keeps populations susceptible to infection.
Frequent antigenic change, known as antigenic drift, is caused by mutations during reproduction of the virus, and results in new variants of influenza.
Flahault, (2007) Influenza vaccine: The challenge of antigenic drift, Vaccine, 25, 6852-6862.
 
 
 
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