Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Risk Factors of Clonorchis sinensis Human Infections in Endemic Areas, Haman-Gun, Republic of Korea: A Case-Control Study

  • Lee, Sang-Eun (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Shin, Hee-Eun (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Lee, Myoung-Ro (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Kim, Yang-Hee (Haman-gun Public Health Center) ;
  • Cho, Shin-Hyeong (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency) ;
  • Ju, Jung-Won (Division of Vectors and Parasitic Diseases, Korea Disease Control and Prevention Agency)
  • Received : 2020.07.23
  • Accepted : 2020.12.09
  • Published : 2020.12.31
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Abstract

Clonorchis sinensis is the most common fish-borne intestinal parasite in Korea. The aim of the present investigation was to survey the status of C. sinensis infection and analyze associated risk factors in residents of Haman-gun, Gyeongsangnam-do. A total of 5,114 residents from 10 administrative towns/villages voluntarily agreed to participate in the study, which comprised fecal examination, a questionnaire survey for risk factors, ultrasonography, and enzyme-linked immunosorbent assay for cancer biomarker detection in the blood. We detected C. sinensis eggs in 5.3% of the subjects. By region, Gunbuk-myeon had the highest number of residents with C. sinensis eggs. The infection rate and intensity were higher in male than in female residents. Based on the risk factor questionnaire, infection was highly associated with drinking, a history of C. sinensis infection, and the practice of eating of raw freshwater fish. Extension of the bile duct, infection intensity, and cancer biomarker detection significantly correlated with the presence of eggs in the study population. In conclusion, the development of feasible, long-term control policies and strategies for the elimination of C. sinensis in Korea is still required.

Keywords

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