Korean J Parasitol.  2017 Jun;55(3):347-350. 10.3347/kjp.2017.55.3.347.

Recent Incidence of Paragonimus westermani Metacercariae in Freshwater Crayfish, Cambaroides similis, from Two Enzootic Sites in Jeollanam-do, Korea

  • 1Department of Pharmacology, College of Medicine, Chung-Ang University, Seoul 06974, Korea.
  • 2Department of Medical Environmental Biology, College of Medicine, Chung-Ang University, Seoul 06974, Korea. hongsj@cau.ac.kr
  • 3Department of Parasitology, Ewha Womans University School of Medicine, Seoul 07985, Korea.
  • 4Department of Parasitology and Tropical Medicine, School of Medicine, Inha University, Incheon 22212, Korea.
  • 5Division of Vector Analysis, National Institute of Health, Korea CDC, Osong Health Technology Administration, Osong 28159, Korea.


An epidemiological study was performed to know the recent infection status of Paragonimus westermani metacercariae (PwMc) in freshwater crayfish, Cambaroides similis, from 2 streams in Jeollanam-do, Republic of Korea. Crayfish were collected from creeks in Bogil-do (Island), Wando-gun, and in a creek near Daeheung Temple in Haenam-gun. The infection rate of crayfish with PwMc in Bogil-do was 89.8%, and the metacercarial burden was 37 PwMc per the infected crayfish. Crayfish in a creek near Daeheung Temple were larger and twice heavier than those in Bogil-do. Of them, 96.5% were infected with PwMc. An average of 140 metacercariae was found in the infected crayfish, almost quadruple to those of Bogil-do. There was a strong correlation between the number of PwMc and body weight of the crayfish. These results suggest that P. westermani metacercariae are still prevalent in crayfish of the 2 regions in Jeollanam-do, Korea.


Paragonimus westermani; metacercaria; freshwater crayfish; Wando; Haenam
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