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. 2014 Dec;20(12):2152–2154. doi: 10.3201/eid2012.140733

Table. Six genotypes of highly pathogenic avian influenza type A identified during 2009–2014 calculated through phylogenetic analysis, China.

    Genotype     Representative virus     Clade     Lineage of gene*
    PB2     PB1     PA     HA     NP     NA     M     NS
    1     H5N2qd14     7.2     A     A     A     B     A     A     B     A
    A/chicken/Jiangsu/1001/2013(H5N2)     7.2     A     A     A     B     A     A     B     A
    A/chicken/Henan/Q7/2013(H5N2)     7.2     A     A     A     B     A     A     B     A
    2     A/chicken/Hebei/1102/2010(H5N2)     7.2     A     A     A     B     A     A     A     A
    3     A/duck/Hebei/0908/2009(H5N2)     7.2     B     B     B     B     B     B     C     B
    4     A/duck/Hebei/2/2011(H5N2)     2.3.4     C     C     C     C     C     C     D     C
    5     A/duck/Jiangsu/m234/2012(H5N2)     2.3.4     C     B     C     C     C     B     D     C
    6
     A/chicken/Tibet/LZ01/2010(H5N2)
     2.3.4
     D
     A
     A
     D
     A
     A
     A
     D
    *Lineages of each gene are partially shown in online Technical Appendix Figures 1–7 (wwwnc.cdc.gov/eid/article/20/12/14-0733-techapp1.pdf). Lineage A of each gene is likely from H9N2 subtype avian influenza virusess. Any 2 viruses with >1 gene of different lineages belong to different genotypes. PB, polymerase basic protein; PA, polymerase acidic protein; HA, hemagglutinin; NP, nucleocapsid protein; NA, neuraminidase; M, matrix protein; NS, nonstructural protein.