The Evolutionary Genetics and Emergence of Avian Influenza Viruses in Wild Birds
Author Information
Author(s): Dugan Vivien G., Chen Rubing, Spiro David J., Sengamalay Naomi, Zaborsky Jennifer, Ghedin Elodie, Nolting Jacqueline, Swayne David E., Runstadler Jonathan A., Happ George M., Senne Dennis A., Wang Ruixue, Slemons Richard D., Holmes Edward C., Taubenberger Jeffery K.
Primary Institution: National Institute of Allergy and Infectious Diseases, National Institutes of Health
Hypothesis
How does genetic diversity and reassortment of avian influenza viruses occur in wild birds?
Conclusion
The study found a high rate of genome reassortment among avian influenza viruses in wild birds, indicating that they form transient genome constellations.
Supporting Evidence
- The study documented a remarkably high rate of genome reassortment among avian influenza viruses.
- Up to 26% of isolates showed evidence of mixed subtype infection.
- The research compiled the largest data set of avian influenza virus genomes to date.
Takeaway
Birds can carry different types of flu viruses that mix together, creating new versions of the virus. This mixing happens a lot and helps the virus change quickly.
Methodology
The study sequenced the complete genomes of 167 influenza A viruses from wild birds and analyzed their genetic diversity and reassortment patterns.
Limitations
The study may not fully capture the true rate of mixed infections due to potential mis-serotyping and the limitations of the sampling methods.
Participant Demographics
The study focused on 14 species of wild Anseriformes from four U.S. states.
Digital Object Identifier (DOI)
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