Einzeltreffer — DigiBib

Background: Continued evolution of highly pathogenic avian influenza A (H5N1) throughout many regions of the eastern hemisphere has led to the emergence of new phylogenetic groups. A total of 1637 new H5N1 hemagglutinin (HA) sequences have become available since the previous nomenclature recommendations described in 2009 by the WHO/OIE/FAO H5N1 Evolution Working Group. A comprehensive analysis including all the new data is needed to update HA clade nomenclature.

Methods: Phylogenetic trees were constructed from data sets of all available H5N1 HA sequences. New clades were designated on the basis of phylogeny and p-distance using the pre-established nomenclature system (Emerg Infec Dis 2008; 14:e1). Each circulating H5N1 clade was subjected to further phylogenetic analysis and nucleotide sequence divergence calculations.

Results: All recently circulating clades (clade 1 in the Mekong River Delta, 2.1.3 in Indonesia, 2.2 in India/Bangladesh, 2.2.1 in Egypt, 2.3.2, 2.3.4 and 7 in Asia) required assignment of divergent HA genes to new second-, third-, and/or fourth-order clades. At the same time, clades 0, 3, 4, 5, 6, 8, 9, and several second- and third-order groups from clade 2 have not been detected since 2008 or earlier.

Conclusions: New designations are recommended for 12 HA clades, named according to previously defined criteria. In addition, viruses from 13 clades have not been detected since 2008 or earlier. The periodic updating of this dynamic classification system allows continued use of a unified nomenclature in all H5N1 studies.

Titel:	Continued evolution of highly pathogenic avian influenza A (H5N1): updated nomenclature.
Link:	Full Text Finder (Volltext)
Zeitschrift:	Influenza and other respiratory viruses, Jg. 6 (2012), Heft 1, S. 1-5
Veröffentlichung:	Oxford, UK : Wiley, c2007-, 2012
Medientyp:	academicJournal
ISSN:	1750-2659 (electronic)
DOI:	10.1111/j.1750-2659.2011.00298.x
Schlagwort:	Animals Asia Birds Cluster Analysis Phylogeny RNA, Viral genetics Sequence Analysis, DNA Evolution, Molecular Hemagglutinin Glycoproteins, Influenza Virus genetics Influenza A Virus, H5N1 Subtype classification Influenza A Virus, H5N1 Subtype genetics Influenza in Birds virology Terminology as Topic
Sonstiges:	Nachgewiesen in: MEDLINE Sprachen: English Corporate Authors: WHO/OIE/FAO H5N1 Evolution Working Group Publication Type: Journal Article Language: English [Influenza Other Respir Viruses] 2012 Jan; Vol. 6 (1), pp. 1-5. <i>Date of Electronic Publication: </i>2011 Oct 29. MeSH Terms: Evolution, Molecular* ; Terminology as Topic* ; Hemagglutinin Glycoproteins, Influenza Virus / genetics ; Influenza A Virus, H5N1 Subtype / classification ; Influenza A Virus, H5N1 Subtype / genetics ; Influenza in Birds / virology ; Animals ; Asia ; Birds ; Cluster Analysis ; Phylogeny ; RNA, Viral / genetics ; Sequence Analysis, DNA References: J Virol. 2010 Sep;84(17):8389-97. (PMID: 20538856) ; Avian Dis. 2010 Mar;54(1 Suppl):307-12. (PMID: 20521651) ; Emerg Infect Dis. 2008 Jul;14(7):e1. (PMID: 18598616) ; PLoS One. 2011 Mar 21;6(3):e17730. (PMID: 21445292) ; Virology. 2010 Oct 10;406(1):88-94. (PMID: 20673942) ; Mol Biol Evol. 2007 Aug;24(8):1596-9. (PMID: 17488738) ; Vopr Virusol. 2008 Sep-Oct;53(5):4-8. (PMID: 19069785) ; Influenza Other Respir Viruses. 2009 Mar;3(2):59-62. (PMID: 19496842) ; Nucleic Acids Res. 2004 Mar 19;32(5):1792-7. (PMID: 15034147) ; Bioinformatics. 2003 Aug 12;19(12):1572-4. (PMID: 12912839) ; Emerg Infect Dis. 2009 Oct;15(10):1641-4. (PMID: 19861062) ; PLoS One. 2008;3(10):e3462. (PMID: 18941631) Substance Nomenclature: 0 (Hemagglutinin Glycoproteins, Influenza Virus) ; 0 (RNA, Viral) Entry Date(s): Date Created: 20111101 Date Completed: 20120329 Latest Revision: 20211020 Update Code: 20231215 PubMed Central ID: PMC5074649

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Continued evolution of highly pathogenic avian influenza A (H5N1): updated nomenclature.