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High prevalence of a novel porcine bocavirus in weanling piglets with respiratory tract symptoms in China


This study presents the first evidence of infection by a novel porcine bocavirus (PBoV) in Chinese swine herds. The PCR detection results showed that PBoV was significantly more prevalent in weanling piglets (69.7%, 69/99) with respiratory tract symptoms than that in other samples (0–13.6%) (P < 0.01). Sequence analysis showed that the partial VP1/2 genes were highly conserved (99–100% identity), and only five frequent nucleotide mutation positions existed in Chinese PBoV strains. These data indicate that PBoV might be an emerging virus for swine respiratory tract diseases. This study could help us to better understand the epidemiology of PBoV.

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This work was partially supported by grants (2006BAD06A01; 2006BAD06A04; 2010-JB05) to S.Y. by the Ministry of Science and Technology (MOST), PR China, and Shanghai Agricultural Funds for “PRRSV surveillance and epidemiology” by Shanghai Municipal Commission of Agriculture. We thank Dr. Tao Tan graciously providing clinical samples.

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Correspondence to Jinxue Long or Shishan Yuan.

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Zhai, S., Yue, C., Wei, Z. et al. High prevalence of a novel porcine bocavirus in weanling piglets with respiratory tract symptoms in China. Arch Virol 155, 1313–1317 (2010).

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  • Classical Swine Fever Virus
  • Multiple Displacement Amplification
  • Abort Fetus
  • Respiratory Tract Disease
  • Bocavirus