Prevalence of canine coronavirus (CCoV) in dog in Japan: Detection of CCoV RNA and retrospective serological analysis
2016
Takano, T. (Kitasato University, Towada, Aomori (Japan). School of Veterinary Medicine, Laboratory of Veterinary Infectious Disease) | Yamashita, S. | Murata-Ohkubo, M. | Satoh, K. | Doki, T. | Hohdatsu, T.
We collected rectal swabs from dogs in Japan during 2011 to 2014, and canine coronavirus (CCoV) nucleocapsid gene was detected by RT-PCR. The relationship between CCoV infection and the manifestation of diarrhea symptoms was investigated, and a correlation was noted (df=1, x**2=8.90, P<0.005). The types of CCoV detected in samples from CCoV-infected dogs were CCoV-I in 88.9% and CCoV-II in 7.4%, respectively. We retrospectively investigated the seroprevalence of CCoV-I in dogs in Japan during 1998 to 2006. The sera were tested with a neutralizing antibody test. In the absence of CCoV-I laboratory strain, we used feline coronavirus (FCoV)-I that shares high sequence homology in the S protein with CCoV-I. 77.7% of the sera were positive for neutralizing anti-FCoV-I antibodies.
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