Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Prevalence of Clonorchiasis in Southern Endemic Areas of Korea in 2006

  • Cho, Shin-Hyeong (Department of Malaria and Parasitic Diseases, National Institute of Health, Korea Centers for Disease Control and Prevention) ;
  • Lee, Ki-Yeon (Department of Malaria and Parasitic Diseases, National Institute of Health, Korea Centers for Disease Control and Prevention) ;
  • Lee, Byung-Chul (Department of Malaria and Parasitic Diseases, National Institute of Health, Korea Centers for Disease Control and Prevention) ;
  • Cho, Pyo-Yun (Department of Malaria and Parasitic Diseases, National Institute of Health, Korea Centers for Disease Control and Prevention) ;
  • Cheun, Hyeong-Il (Department of Malaria and Parasitic Diseases, National Institute of Health, Korea Centers for Disease Control and Prevention) ;
  • Hong, Sung-Tae (Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine and Institute of Endemic Diseases, Seoul National University Medical Research Center) ;
  • Sohn, Woon-Mok (Department of Parasitology and Institute of Health Sciences, Gyeongsang National University College of Medicine) ;
  • Kim, Tong-Soo (Department of Malaria and Parasitic Diseases, National Institute of Health, Korea Centers for Disease Control and Prevention)
  • Published : 2008.09.30
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Abstract

This study was performed to investigate prevalence of clonorchiasis among the inhabitants living in villages along the 4 major rivers, Nakdong-gang (= river), Seomjin-gang, Youngsan-gang, and Guem-gang in southern Korea. From January to December 2006, a total of 24,075 stool samples (1 sample per an inhabitant) were collected in 23 localities and examined by the formalin-ether sedimentation technique. Of the inhabitants examined, 3,441 (14.3%) were found to harbor various types of intestinal parasite eggs, cysts or larvae. Numbers of infected people were 2,661 (11.1%) for Clonorchis sinensis, 431 (1.8%) for heterophyids, 226 (0.9%) for Entamoeba spp., 57 (0.2%) for Giardia lamblia, 30 (0.1%) for Trichuris trichiura, and 18 (0.07%) for echinostomes. Prevalence rates of clonorchiasis according to the river basin were 17.1% in Nakdong-gang, 11.2% in Seomjin-gang, 5.5% in Youngsan-gang and 4.6% in Guem-gang. Of the 2,661 C. sinensis egg-positive cases, 57.7% was male. The present findings suggest that clonorchiasis is still highly prevalent among inhabitants in the riverside areas of southern Korea, and it is necessary to implement a systematic control program in the endemic areas.

Keywords

References

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