Persistent circulation of Coxsackievirus A6 of genotype D3 in mainland of China between 2008 and 2015.

Persistent circulation of Coxsackievirus A6 of genotype D3 in mainland of China between 2008 and 2015.
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2008年至2015年D3基因型柯萨奇病毒A6在中国大陆持续流行

DOI:
10.1038/s41598-017-05618-0
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发表时间:
2017-07-14
期刊:
影响因子:
4.6
通讯作者:
Xu W
Xu W
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Song Y;Zhang Y;Ji T;Gu X;Yang Q;Zhu S;Xu W;Xu Y;Shi Y;Huang X;Li Q;Deng H;Wang X;Yan D;Yu W;Wang S;Yu D;Xu W

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本研究分析了1992 - 2015年中国大陆柯萨奇病毒A6(CV-A6)的807条VP 1全序列,其中本研究中的520条和GenBank数据库中的287条,旨在为中国CV-A6的分子流行病学特征提供基本框架。利用GenBank中46株代表性CV-A6分离株的65个VP 1基因序列进行基因分型和亚基因分型。结果表明,CV-A6株可分为A、B、C、D 4种基因型,并可进一步分为B1-B2、C1-C2、D1-D3亚基因型。D3是近年来在中国大陆流行的主要亚型,代表了807株中国分离株中的734株。66个菌株属于D2,而B1和C1各包含一个菌株,5个AFP菌株形成B2。亚基因型D3于2008年首次流行,自2009年以来已成为主要的亚基因型,然后在2013年达到高峰,而D2在过去几年中大多无法检测到。这些数据揭示了CV-A6在中国大陆的不同传播阶段,D3亚基因型可能具有更强的传播能力。
A total of 807 entireVP1sequences of Coxsackievirus A6 (CV-A6) from mainland of China from 1992 to 2015, including 520 in this study and 287 from the GenBank database, were analysed to provide a basic framework of molecular epidemiological characteristics of CV-A6 in China. Sixty-fiveVP1sequences including 46 representative CV-A6 isolates from 807 Chinese strains and 19 international strains from GenBank were used for describing the genotypes and sub-genotypes. The results revealed that CV-A6 strains can be categorised into 4 genotypes designated as A, B, C, and D according to previous data and can be further subdivided into B1–B2, C1–C2, and D1–D3 sub-genotypes. D3 is the predominant sub-genotype that circulated in recent years in mainland of China and represents 734 of 807 Chinese isolates. Sixty-six strains belong to D2, whereas B1 and C1 comprise a single strain each, and five AFP strains formed B2. Sub-genotype D3 first circulated in 2008 and has become the predominant sub-genotype since 2009 and then reached a peak in 2013, while D2 was mostly undetectable in the past years. These data revealed different transmission stages of CV-A6 in mainland of China and that sub-genotype D3 may have stronger transmission ability.
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