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- Antigenic_drift abstract "Antigenic drift is a mechanism for variation in viruses that involves the accumulation of mutations within the genes that code for antibody-binding sites. This results in a new strain of virus particles which cannot be inhibited as effectively by the antibodies that were originally targeted against previous strains, making it easier for the virus to spread throughout a partially immune population. Antigenic drift occurs in both influenza A and influenza B viruses.The immune system recognizes viruses when antigens on the surfaces of virus particles bind to immune receptors that are specific for these antigens. This is similar to a lock recognizing a key. After an infection, the body produces many more of these virus-specific immune receptors, which prevent re-infection by this particular strain of the virus and produce acquired immunity. Similarly, a vaccine against a virus works by teaching the immune system to recognize the antigens exhibited by this virus. However, viral genomes are constantly mutating, producing new forms of these antigens. If one of these new forms of an antigen is sufficiently different from the old antigen, it will no longer bind to the receptors and viruses with these new antigens can evade immunity to the original strain of the virus. When such a change occurs, people who have had the illness in the past are nevertheless not immune to the new strain and thus the vaccines against the original virus will be less effective against the illness. Two processes drive the antigens to change: antigenic drift and antigenic shift, antigenic drift being the more common. The rate of antigenic drift is dependent on two characteristics: the duration of the epidemic, and the strength of host immunity. A longer epidemic allows for selection pressure to continue over an extended period of time and stronger host immune responses increase selection pressure for development of novel antigens.".
- Antigenic_drift wikiPageExternalLink art.asp?articlekey=26116.
- Antigenic_drift wikiPageExternalLink AntigenicDriftIllustration.htm.
- Antigenic_drift wikiPageID "543850".
- Antigenic_drift wikiPageLength "9808".
- Antigenic_drift wikiPageOutDegree "29".
- Antigenic_drift wikiPageRevisionID "681957375".
- Antigenic_drift wikiPageWikiLink Adaptive_immune_system.
- Antigenic_drift wikiPageWikiLink Antibody.
- Antigenic_drift wikiPageWikiLink Antigen.
- Antigenic_drift wikiPageWikiLink Antigenic_shift.
- Antigenic_drift wikiPageWikiLink Avidity.
- Antigenic_drift wikiPageWikiLink Category:Influenza.
- Antigenic_drift wikiPageWikiLink Category:Virology.
- Antigenic_drift wikiPageWikiLink Evolutionary_pressure.
- Antigenic_drift wikiPageWikiLink Flu_season.
- Antigenic_drift wikiPageWikiLink Genetic_code.
- Antigenic_drift wikiPageWikiLink Genetic_drift.
- Antigenic_drift wikiPageWikiLink Hemagglutinin_(influenza).
- Antigenic_drift wikiPageWikiLink Immune_system.
- Antigenic_drift wikiPageWikiLink Immunity_(medical).
- Antigenic_drift wikiPageWikiLink Influenza_A_virus.
- Antigenic_drift wikiPageWikiLink Influenza_A_virus_subtype_H3N2.
- Antigenic_drift wikiPageWikiLink Influenzavirus_B.
- Antigenic_drift wikiPageWikiLink Mutation.
- Antigenic_drift wikiPageWikiLink Neuraminidase.
- Antigenic_drift wikiPageWikiLink Orthomyxoviridae.
- Antigenic_drift wikiPageWikiLink Point_mutation.
- Antigenic_drift wikiPageWikiLink Population_genetics.
- Antigenic_drift wikiPageWikiLink Proofreading_(biology).
- Antigenic_drift wikiPageWikiLink RNA_polymerase.
- Antigenic_drift wikiPageWikiLink RNA_virus.
- Antigenic_drift wikiPageWikiLink Strain_(biology).
- Antigenic_drift wikiPageWikiLink Vaccine.
- Antigenic_drift wikiPageWikiLinkText "Antigenic drift".
- Antigenic_drift wikiPageWikiLinkText "antigenic drift".
- Antigenic_drift wikiPageWikiLinkText "mutate".
- Antigenic_drift date "August 2011".
- Antigenic_drift reason "see discussion".
- Antigenic_drift wikiPageUsesTemplate Template:Cite_journal.
- Antigenic_drift wikiPageUsesTemplate Template:Clarify.
- Antigenic_drift wikiPageUsesTemplate Template:Distinguish.
- Antigenic_drift wikiPageUsesTemplate Template:Portal.
- Antigenic_drift wikiPageUsesTemplate Template:Reflist.
- Antigenic_drift wikiPageUsesTemplate Template:Val.
- Antigenic_drift wikiPageUsesTemplate Template:Virus_topics.
- Antigenic_drift subject Category:Influenza.
- Antigenic_drift subject Category:Virology.
- Antigenic_drift hypernym Mechanism.
- Antigenic_drift type Organisation.
- Antigenic_drift type Thing.
- Antigenic_drift comment "Antigenic drift is a mechanism for variation in viruses that involves the accumulation of mutations within the genes that code for antibody-binding sites. This results in a new strain of virus particles which cannot be inhibited as effectively by the antibodies that were originally targeted against previous strains, making it easier for the virus to spread throughout a partially immune population.".
- Antigenic_drift label "Antigenic drift".
- Antigenic_drift differentFrom Antigenic_shift.
- Antigenic_drift differentFrom Genetic_drift.
- Antigenic_drift sameAs Q575258.
- Antigenic_drift sameAs انسياق_مستضدي.
- Antigenic_drift sameAs Antigendrift.
- Antigenic_drift sameAs Glissement_antigénique.
- Antigenic_drift sameAs Antigénsodródás.
- Antigenic_drift sameAs 抗原連続変異.
- Antigenic_drift sameAs Антигендік_жылжым.
- Antigenic_drift sameAs Antigene_drift.
- Antigenic_drift sameAs Przesunięcie_antygenowe.
- Antigenic_drift sameAs Deriva_antigénica.
- Antigenic_drift sameAs m.02ng6k.
- Antigenic_drift sameAs Дрейф_антигенов.
- Antigenic_drift sameAs Antigénový_drift.
- Antigenic_drift sameAs Q575258.
- Antigenic_drift wasDerivedFrom Antigenic_drift?oldid=681957375.
- Antigenic_drift isPrimaryTopicOf Antigenic_drift.