The roles of competition and mutation in shaping antigenic and genetic diversity in influenza.
Influenza A (H3N2) offers a well-studied, yet not fully understood, disease in terms of the interactions between pathogen population dynamics, epidemiology and genetics. A major open question is why the virus population is globally dominated by a single and very recently diverged (2-8 years) lineage...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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Public Library of Science
2013
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| _version_ | 1797086353833328640 |
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| author | Zinder, D Bedford, T Gupta, S Pascual, M |
| author_facet | Zinder, D Bedford, T Gupta, S Pascual, M |
| author_sort | Zinder, D |
| collection | OXFORD |
| description | Influenza A (H3N2) offers a well-studied, yet not fully understood, disease in terms of the interactions between pathogen population dynamics, epidemiology and genetics. A major open question is why the virus population is globally dominated by a single and very recently diverged (2-8 years) lineage. Classically, this has been modeled by limiting the generation of new successful antigenic variants, such that only a small subset of progeny acquire the necessary mutations to evade host immunity. An alternative approach was recently suggested by Recker et al. in which a limited number of antigenic variants are continuously generated, but most of these are suppressed by pre-existing host population immunity. Here we develop a framework spanning the regimes described above to explore the impact of rates of mutation and levels of competition on phylodynamic patterns. We find that the evolutionary dynamics of the subtype H3N2 influenza is most easily generated within this framework when it is mutation limited as well as being under strong immune selection at a number of epitope regions of limited diversity. |
| first_indexed | 2024-03-07T02:20:49Z |
| format | Journal article |
| id | oxford-uuid:a3d8435f-1083-4e75-b894-951a37ee90b5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:20:49Z |
| publishDate | 2013 |
| publisher | Public Library of Science |
| record_format | dspace |
| spelling | oxford-uuid:a3d8435f-1083-4e75-b894-951a37ee90b52022-03-27T02:29:54ZThe roles of competition and mutation in shaping antigenic and genetic diversity in influenza.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a3d8435f-1083-4e75-b894-951a37ee90b5EnglishSymplectic Elements at OxfordPublic Library of Science2013Zinder, DBedford, TGupta, SPascual, MInfluenza A (H3N2) offers a well-studied, yet not fully understood, disease in terms of the interactions between pathogen population dynamics, epidemiology and genetics. A major open question is why the virus population is globally dominated by a single and very recently diverged (2-8 years) lineage. Classically, this has been modeled by limiting the generation of new successful antigenic variants, such that only a small subset of progeny acquire the necessary mutations to evade host immunity. An alternative approach was recently suggested by Recker et al. in which a limited number of antigenic variants are continuously generated, but most of these are suppressed by pre-existing host population immunity. Here we develop a framework spanning the regimes described above to explore the impact of rates of mutation and levels of competition on phylodynamic patterns. We find that the evolutionary dynamics of the subtype H3N2 influenza is most easily generated within this framework when it is mutation limited as well as being under strong immune selection at a number of epitope regions of limited diversity. |
| spellingShingle | Zinder, D Bedford, T Gupta, S Pascual, M The roles of competition and mutation in shaping antigenic and genetic diversity in influenza. |
| title | The roles of competition and mutation in shaping antigenic and genetic diversity in influenza. |
| title_full | The roles of competition and mutation in shaping antigenic and genetic diversity in influenza. |
| title_fullStr | The roles of competition and mutation in shaping antigenic and genetic diversity in influenza. |
| title_full_unstemmed | The roles of competition and mutation in shaping antigenic and genetic diversity in influenza. |
| title_short | The roles of competition and mutation in shaping antigenic and genetic diversity in influenza. |
| title_sort | roles of competition and mutation in shaping antigenic and genetic diversity in influenza |
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