Serological Survey of Antibody to Neospora caninum in Japanese Dogs.

  • SAWADA Masumi
    Laboratory of Comparative Pathology, Graduate School of Veterinary Medicine, Hokkaido University
  • PARK Chun-Ho
    Department of Veterinary Pathology, Faculty of Agriculture, Tottori University
  • KONDO Hisayo
    Department of Veterinary Pathology, Faculty of Agriculture, Tottori University
  • MORITA Takehito
    Department of Veterinary Pathology, Faculty of Agriculture, Tottori University
  • SHIMADA Akinori
    Department of Veterinary Pathology, Faculty of Agriculture, Tottori University
  • YAMANE Itsuro
    Laboratory of Epidemiology, National Institute of Animal Health
  • UMEMURA Takashi
    Laboratory of Comparative Pathology, Graduate School of Veterinary Medicine, Hokkaido University

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Abstract

Prevalence of antibody to Neospora caninum (NC) in Japanese dogs were examined. The antibody was positive in 15 of 48 dogs (31.3%) reared in the dairy farms that had case of the abortions due to NC infection or had the cattle seropositive to NC, whereas the prevalence was 7.1% (14 of 198 dogs) among the dogs kept in urban areas. In one dog breeder, all 17 Shetland sheepdogs older than 7 months were seropositive, and one pup was diagnosed as neosporosis 2 months before the first serological examination. The antibody titers of the dogs kept at this breeder were almost unchanged for 1.5 years. Serological evidence of the dogs in the dairy farms and urban areas indicates the transmission of NC between dogs and cattle. Also serological results of the dogs in one breeder may suggest the potential horizontal transmission among dogs.

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