Abstract
Astroviruses are becoming a growing concern in veterinary and public health. Many astrovirus species are associated with enteric diseases have been described in both mammalian and avian hosts. In the present study, 23 fecal samples from diarrheic minks were collected in Liaoning and Shandong Province, and an investigation of astrovirus was performed using biochemical methods and RT-PCR assay with specific primers. A total of four mink astroviral isolates were detected from sick minks with diarrhea problems. Further sequencing and characterization of the partial ORF1b gene and ORF2 gene segments revealed low sequence identities (20.0–85.3 and 31.8–87.2 %) with known astroviral strains, indicating the emergence of a novel clade of astroviruses. Some new features of the astroviral genome have also been discovered. The phylogenetic tree revealed that all samples were distantly related to mink astrovirus and were closely related to chicken astroviruses and turkey astroviruses. MK/DL-1, MK/DL-2, MK/SD-1, and MK/SD-2 formed a new clade and were found to be more closely related to astroviruses from birds than to other mink strains, indicating past cross-species transmission and considerable zoonotic potential.
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Acknowledgments
The author would like to thank Zhiming Zhang and all the staff of the Dalian Mingwei Mink Industry Company for providing the mink fecal samples. This work was supported by the Innovation Project Team for Special Economic Animal Disease Prevention and Control of Jilin Province (No. 20121823).
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The author declares that there are no conflicts of interest with respect to the research, authorship, or in publication of this article.
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Sun, N., Yang, Y., Wang, GS. et al. Detection and Characterization of Avastrovirus Associated with Diarrhea Isolated from Minks in China. Food Environ Virol 6, 169–174 (2014). https://doi.org/10.1007/s12560-014-9155-3
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DOI: https://doi.org/10.1007/s12560-014-9155-3