Revised and updated nomenclature for highly pathogenic avian influenza A (H5N1) viruses
Author:
- World Health Organization/World Organisation for Animal Health/Food and Agriculture Organization (WHO/OIE/FAO) H5N1 Evolution Working GroupWGWorld Health Organization/World Organisation for Animal Health/Food and Agriculture Organization (WHO/OIE/FAO) H5N1 Evolution Working Group
Open Access
- 31 January 2014
- journal article
- research article
- Published by Wiley in Influenza and Other Respiratory Viruses
- Vol. 8 (3) , 384-388
Abstract
The divergence of the hemagglutinin gene of A/goose/Guangdong/1/1996‐lineage H5N1 viruses during 2011 and 2012 (807 new sequences collected through December 31, 2012) was analyzed by phylogenetic and p‐distance methods to define new clades using the pre‐established nomenclature system. Eight new clade designations were recommended based on division of clade 1·1 (Mekong River Delta), 2·1·3·2 (Indonesia), 2·2·2 (India/Bangladesh), 2·2·1·1 (Egypt/Israel), and 2·3·2·1 (Asia). A simplification to the previously defined criteria, which adds a letter rather than number to the right‐most digit of fifth‐order clades, was proposed to facilitate this and future updates.Keywords
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