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Within-Host Evolution of Human Influenza Virus
Katherine S Xue1, Louise H Moncla2, Trevor Bedford2
1Department of Genome Sciences, University of Washington, Seattle, WA, USA; Division of Basic Sciences and Computational Biology Program, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
Trends in Microbiology
|March 15, 2018
Summary
Influenza virus evolution within hosts is driven by factors like selection and treatment. Understanding these within-host dynamics is key to explaining the virus's global evolutionary patterns.
Area of Science:
- Virology
- Evolutionary Biology
- Genetics
Background:
- Influenza virus undergoes rapid global evolution.
- The mechanisms of within-host influenza evolution are not well understood.
- Individual mutations are the starting point for viral evolution.
Purpose of the Study:
- To review recent advancements in understanding influenza virus evolution within human hosts.
- To explore the factors influencing within-host viral evolution.
- To connect within-host evolution to global influenza dynamics.
Main Methods:
- Review of recent scientific literature.
- Analysis of deep sequencing data for within-host genetic diversity.
- Examination of factors affecting viral evolution in acute and chronic infections.
Main Results:
- Deep sequencing enables measurement of within-host genetic diversity.
- Antigenic selection, antiviral treatment, tissue specificity, spatial structure, and infection multiplicity are key factors.
- Within-host evolution studies provide insights into broader evolutionary patterns.
Conclusions:
- Understanding within-host influenza evolution is crucial.
- Multiple factors interact to shape viral evolution during infection.
- Within-host dynamics are integral to the global evolution of influenza viruses.
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