Retrospective study of porcine circovirus 3 infection in China

文献类型： 外文期刊

第一作者： Sun, J.

作者： Sun, J.;Zhu, Y.;Sun, J.;Mi, S.;Bao, F.;Guo, H.;Tu, C.;Gong, W.;Wei, L.;Lu, Z.;Bao, F.;Tu, C.

作者机构：

关键词： China; PCV3; phylogenetic analysis; retrospective analysis

期刊名称：TRANSBOUNDARY AND EMERGING DISEASES （ 影响因子：5.005； 五年影响因子：4.622 ）

ISSN： 1865-1674

年卷期： 2018 年 65 卷 3 期

页码：

收录情况： SCI

摘要： PCV3 is an emerging swine virus associated with porcine dermatitis and nephropathy syndrome (PDNS), reproductive failure, respiratory diseases and systematic inflammation. Although first identified in 2015, the earliest case has been traced back to 2009 in the United States. In China, PCV3 infection was first detected in 2015, but little information has been available about its occurrence and prevalence there before 2015. In this study, 200 porcine clinical samples collected from 20 provinces, five autonomous regions and four municipalities between 1990 and 1999 were analysed for PCV3 infection by PCR. Results showed that 6.5% of the porcine samples collected from eight provinces and one autonomous region were PCV3 positive, with the earliest cases occurring in 1996. Nucleotide sequence analysis showed that PCV3 strains obtained in this study shared 96.6%-99.7% and 97.1%-99.4% sequence identity at the ORF2 gene and genome levels with all available reference strains from China and other countries, indicating the high genetic stability of PCV3 over the past 20years.

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