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摘要:
Porcine circoviruses (PCV) include PCV1,PCV2,and the new-emerging PCV3.PCV2 is pathogenic to pigs,but the pathogenicity of PCV3 in pigs is debatable.Recently,there have been frequent reports of PCV2 and PCV3 co-infections in clinical samples.Thus,it would be practical to develop a duplex PCR method to detect PCV2 and PCV3 simultaneously.In this study,specific primers and probes were designed to target PCV2 cap and PCV3 rep genes.A duplex real-time PCR method was then developed to detect the two viruses.The assay was found to be highly specific,sensitive,and reproducible for PCV2/3 without cross-reactions with other swine pathogens.The sensitivity of this assay was 2.9 copies for the PCV2 plasmid and 22.5 copies for the PCV3 plasmid.The established assay was then used to detect PCV2/3 infection in 340 clinical samples collected in the first half of 2017.The results showed that the co-infection rate of PCV2/3 in the samples was 27.6%.Our study provides an important tool that can be used to perform urgently needed surveys for the two porcine circoviruses to evaluate their impact on the swine industry.
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来源期刊 中国病毒学 学科
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年,卷(期) 2018,(2) 所属期刊栏目
研究方向 页码范围 181-186
页数 6页 分类号
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中国病毒学
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1674-0769
42-1706/Q
武汉武昌区小洪山中区44号
eng
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