Abstract
Canine distemper virus (CDV) is a highly contagious pathogen of dogs. Vaccination is an effective way to protect dogs from CDV infection, but occasionally fails. In the present study, a wild type (wt) CDV, named XJ2, was isolated from a dead vaccinated dog. The hemagglutinin (H) gene of the XJ2 was amplified and analyzed for the molecular characteristics including N-glycosylation sites, phylogenesis, hydrophobicity and epitopes. The data indicated that XJ2 was a genetic variant strain of CDV. CDV-sero-negative dogs were inoculated intranasally with XJ2, developed severe clinical symptoms and died, suggesting high virulence.
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