Evolutionary features of influenza A/H5N1 virus populations in Egypt: poultry and human health implications

Evolutionary features of influenza A/H5N1 virus populations in Egypt: poultry and human health... Since 2006, in Egypt, highly pathogenic avian influenza virus (HPAIV) H5N1 has established endemic status in poultry. Bayesian evolutionary analysis sampling trees suggested an introduction date in the third quarter of 2005. Evolutionary dynamics using Bayesian analysis showed that H5N1 viruses of clade 2.2.1.1 evolved at higher rates than those of clade 2.2.1.2. Bayesian skyline plot analysis of the HA gene of 840 and NA gene of 401 Egyptian H5N1 viruses from 2006-2015 identified two waves of viral population expansion correlating with the stepwise emergence of the 2.2.1.1 variant lineage in 2008 and with the newly emerging 2.2.1.2 cluster in late 2014. H5N1 infections in human hosts in 2014-2015 were statistically linked to a contemporary poultry outbreak. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Evolutionary features of influenza A/H5N1 virus populations in Egypt: poultry and human health implications

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Springer-Verlag Wien
Subject
Biomedicine; Virology; Medical Microbiology; Infectious Diseases
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-016-2849-0
Publisher site
See Article on Publisher Site

Abstract

Since 2006, in Egypt, highly pathogenic avian influenza virus (HPAIV) H5N1 has established endemic status in poultry. Bayesian evolutionary analysis sampling trees suggested an introduction date in the third quarter of 2005. Evolutionary dynamics using Bayesian analysis showed that H5N1 viruses of clade 2.2.1.1 evolved at higher rates than those of clade 2.2.1.2. Bayesian skyline plot analysis of the HA gene of 840 and NA gene of 401 Egyptian H5N1 viruses from 2006-2015 identified two waves of viral population expansion correlating with the stepwise emergence of the 2.2.1.1 variant lineage in 2008 and with the newly emerging 2.2.1.2 cluster in late 2014. H5N1 infections in human hosts in 2014-2015 were statistically linked to a contemporary poultry outbreak.

Journal

Archives of VirologySpringer Journals

Published: Apr 11, 2016

References

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