Epidemiological Study and Control Trial of Taeniid Cestode Infection in Farm Dogs in Qinghai Province, China

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  • GUO Zhihong
    Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, the People of Republic of China
  • LI Wei
    Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, the People of Republic of China
  • PENG Mao
    Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, the People of Republic of China
  • DUO Hong
    Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, the People of Republic of China
  • SHEN Xiuying
    Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, the People of Republic of China
  • FU Yong
    Academy of Animal and Veterinary Medicine, University of Qinghai, No. 1, Weier road, Sci-biological Industry Areas, Xining, Qinghai, the People of Republic of China
  • IRIE Takao
    Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan
  • GAN Tiantian
    Graduate School of Agriculture, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan
  • KIRINO Yumi
    Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan
  • NASU Tetsuo
    Laboratory of Veterinary Anatomy, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan
  • HORII Yoichiro
    Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan Division for International Cooperation and Education, Center for Animal Disease Control, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan
  • NONAKA Nariaki
    Laboratory of Veterinary Parasitic Diseases, Interdisciplinary Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan Division for International Cooperation and Education, Center for Animal Disease Control, University of Miyazaki, 1–1 Gakuen-Kibanadai-Nishi, Miyazaki, 889–2192, Japan

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An epidemiological study and control trial were conducted to assess taeniid infection in farm dogs in Qinghai Province, China. To improve egg detection by fecal examination, a deworming step with praziquantel was incorporated into the sampling methodology. As a result, a marked increase in the number of egg-positive samples was observed in samples collected at 24 hr after deworming. Then, the fecal examination and barcoding of egg DNA were performed to assess the prevalence of taeniid species in dogs from Xinghai, Haiyan, Gangcha and Chengduo counties. Analysis of 277 dog feces revealed that taeniid cestodes, including Taenia spp. and Echinococcus granulosus, were highly prevalent in Xinghai (34.4%), but eggs were not found in Haiyan where a control trial on canine echinococcosis had been conducted 20 years previously. A control trial involving the administration of 5–10 mg/kg praziquantel to 90 farm dogs at 45-day intervals was conducted in Xinghai. The prevalence of taeniid cestodes in the dogs was reduced to 9.6% and 4.9% after one and two years, respectively, indicating that some dogs were not administered praziquantel properly. A questionnaire survey of farmers in Xinghai and Haiyan revealed that most farmers in Xinghai were not familiar with echinococcosis or the transmission route of the disease, while most farmers in Haiyan had a more thorough understanding of the disease. The findings implied that a program for educating local farmers would be important for efficiently controlling canine taeniid infection in the region.

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