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antigenic drift

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia 0.02 sec.
antigenic drift [‚an·tə¦jen·ik ′drift]
(immunology)
Minor change of an antigen on the surface of a pathogenic microorganism.


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Antigenic drift of H5N2 viruses belonging to the Mexico lineage, resulting in lower identity (less similarity) to the vaccine strain, has been described (16).
Control of avian influenza in poultry by Marangon, Stefano / Emerging Infectious Diseases
Antigenic drift refers to successive small point mutations that occur with successive replication.
The flu ... and you by Andrews, Nancy / The Dental Assistant
At present that is not the case, but influenza viruses are notorious for their ability to mutate via a process called antigenic drift.
Flu vaccine production gets a shot in the arm by Hood, Ernie / Environmental Health Perspectives
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