Abstract
Canine distemper virus (CDV) is a major pathogen not only in raccoon dogs but also in a variety of carnivorous animals, including domesticated animals, particularly if they have not been vaccinated. In this study, a wild-type strain of CDV was isolated from lung tissue from a raccoon dog kept at a fur farm in Jilin Province, China. Cytopathic effects typical of CDV infection were observed after three blind passages in Vero cells, yielding a virus titer of 10(4.6) TCID50/mL. Virus identification was carried out by RT-PCR, immunofluorescence, electron microscopy, and genome sequencing. The results showed that the isolated virus, termed the SY strain, corresponded to the Asia-1 genotype of CDV and has a genome of 15,690 nucleotides. This represents the first complete nucleotide sequence of a CDV strain circulating in raccoon dogs in China.
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