›› 2014, Vol. 41 ›› Issue (11): 85-89.

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Establishment of Nested PCR for Diagnosis of H3 Subtype Avian Influenza Virus

LIU Ting-ting1, XIE Zhi-xun2, SONG De-gui1, LUO Si-si2, XIE Li-ji2, LI Meng2, XIE Zhi-qin2, DENG Xian-wen2   

  1. 1. College of Life Science, Guangxi Normal University, Guilin 541000, China;
    2. Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning 530001, China
  • Received:2014-06-12 Online:2014-11-20 Published:2014-12-06

Abstract: In order to establish a method to detect H3 subtype avian influenza virus (AIV), two pairs of specific primers were designed and selected according to the conserved sequences of the hemagglutinin (HA) genes of H3 subtype AIV, the reaction conditions were optimized to establish the nested PCR.The specificity and sensitivity of assays were evaluated, and 96 clinical samples were detected by nested PCR. The results showed that the nested PCR was only specific to H3 subtype AIV, without amplification of other viruses; the detection limit of nested PCR was 1×103 copies/μL which was 100 fold higher than the routine PCR; the detection of clinical samples were consistent with the viral isolation completely. This study provided a accurate and effective method for the detection of H3 subtype AIV.

Key words: H3 subtype avian influenza virus (AIV); nested PCR; detection method

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