[Transmission and prevalence patterns of C4a evolutionary lineage of human enterovirus 71 circulating in mainland China, 2008-2010].

Authors:
  • YZYan Zhang
    Yan Zhang
  • JZJian-Hui Zhou
    Jian-Hui Zhou
  • ZZZhen Zhu
    Zhen Zhu
  • NMNai-Ying Mao
    Nai-Ying Mao
  • SXSong-Tao Xu
    Song-Tao Xu
  • ACAi-Li Cui
    Ai-Li Cui
  • SZShuang-Li Zhu
    Shuang-Li Zhu
  • YZYong Zhang
    Yong Zhang
  • XKXiao-Hui Kongg
    Xiao-Hui Kongg
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  • 1 December 2012
    • journal article
    • abstracts
Abstract
To understand the evolutionary relationship between the C4a evolutionary lineage of human enterovirus 71 (HEV71) strains circulating in mainland of China during 2008-2010 and 2008 Fuyang strains and study the prevalence and transmission patterns of 2008 Fuyang strains. Download all the complete VP1 ( > or = 891 bp) or approximate complete VP1 (> or = 876 bp) gene nucleotide sequences from GenBank of HEV71 strains circulating in Mainland of China during 2008-2010. And analyze the phylogenetic relationship between Fuyang strains and other provinces' strains using the MEGA software, version 5.0. All of the HEV71 isolates circulating in Mainland of China during 2008-2010 were clustered into evolutionary lineage C4a except for eight strains grouped in the genotype A and one isolate belongs to evolutionary lineage C4b; the homology analysis showed there were 96.5%-100% identity between C4a viruses circulating in mainland China during 2008-2010 and 2008 Fuyang strains, and they were evolved from C4b viruses of 1998. The transmission chains of Fuyang strains were mainly transmitted in Guangdong, Jiangsu, Shanghai, Hunan, Shandong provinces. The predominant viruses circulating in Mainland of China during 2008-2010 were evolutionary lineage C4a of human Enterovirus 71; Fuyang transmission chains mainly distributed in southern of China and the Central China around Anhui provinces.