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Phylogenetic analysis and molecular characteristics of 17 porcine reproductive and respiratory syndrome virus isolates in Southern China from 2010 to 2011.
Minze Zhang
1 ,
Jiexiong Xie ,
Long Sun ,
Zhenpeng Cao ,
Honglang Gu ,
Shengchao Deng ,
Yao Chen ,
Zongxi Cao ,
Fengfeng Tang ,
Shuo Su ,
Guihong Zhang
Dec 2013
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Abstract
We analyzed the complete genomic sequences of 17 porcine reproductive and respiratory syndrome virus (PRRSV) isolates from Southern China obtained between 2010 and 2011 and found that four of seven isolates from 2011 were closely related to the JXA1-R strain (vaccine virus of JXA1). This close relationship between field isolates and China domestic vaccine viruses has not been reported to date. The occurrence of vaccine-like viruses potentially creates a threat for the pig breeding industry and brings difficulties for control of this disease.