Korean J Parasitol.  2008 Dec;46(4):247-251. 10.3347/kjp.2008.46.4.247.

Infection Status of Freshwater Fish with Metacercariae of Clonorchis sinensis in Korea

  • 1Department of Parasitology and Tropical Medicine, and Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul 110-799, Korea. hst@snu.ac.kr
  • 2Korea Association of Health Promotion, Seoul 157-704, Korea.


This study investigated freshwater fish for their current infection status with metacercariae of Clonorchis sinensis in Korea. Twenty-one species of freshwater fish (n = 677) were collected from 34 regions nationwidely from February 2007 to June 2008. They were individually examined by digestion technique. Eight species of freshwater fish from 17 different regions were recognized positive for the metacercariae of C. sinensis. The positive rates (range of metacercariae number per fish) of fish by the species were as follows: 48% (1-1,142) in Pseudorasbora parva, 60% (1-412) in Pungtungia herzi, 15.7% (1-23) in Pseudogobio esocinus, 29% (1-7) in Acheilognathus intermedia, 21% (1-4) in Odontobutis interrupta, 33% (1-6) in Zacco temmincki, 3.6% (1-4) in Zacco platypus, and 26.3% (1) in Hemibarbus labeo. The two species, P. parva and P. herzi, are able to be the index fish for estimation of C. sinensis transmission in a certain locality. Still several species of freshwater fish are briskly transmitting C. sinensis infection in many riverside areas of southern Korea.


Clonorchis sinensis; metacercariae; freshwater fish

MeSH Terms

Clonorchis sinensis/*isolation & purification
Fish Diseases/epidemiology/*parasitology
Fresh Water
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