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Epidemiological studies on Metagonimus infection along the Hongcheon river, Kangwon province
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Original Article

Epidemiological studies on Metagonimus infection along the Hongcheon river, Kangwon province

Ahn, Yung Kyum , Ryang, Yong Suk
Korean J Parasitol 1988;26(3):207-213.
1Department of Parasitology, Yonsei University, Wonju College of Medicine, Korea.
2Department of Medical Technology, Yonsei University, College of Health Science, Wonju 220-701, Korea.
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Abstract

The Hongcheon river system flows down through the Hongcheon area of Kangwon-do, and reaches to the Cheongpyeong Dam in Kyonggi-do. Stool specimens from the inhabitants residing along the Hongcheon river basin were examined to detect infection rate of Metagonimus sp., and the intermediate hosts were collected to detect larval stages. The results obtained were as follows: Thirty-nine (33 males and 6 females) out of 529 (314 males and 215 females) inhabitants were infected with Metagonimus sp., showing a total positive rate of 7.4 per cent. In eight areas surveyed, the specimens from Kulji-ri of Bukbang-myon at the middle part of the river showed the highest positive rate of 26.9 per cent (14 positives out of 52) (males; 38.2per cent). The specimens from Mogog-ri of Seo-myon at the downstream of the river showed a positive rate of 10.4 per cent (13 positives out of 125) (males;12.6 per cent). The positive rates in other regions were less than 10 per cent. The density of the first intermediate host, Semisulcospira sp., was the highest in Kulji-ri of Bukbang-myon (10-20 snails per m(2)), and the infection rate of Metagonimus cercariae in the snails was 10.7 per cent(13 positives out of 121 snails). The infection rate of Metagonimus metacercariae in Zacco platypus, the fresh water fish favorably eaten raw by the inhabitants, was 68.2 per cent (30 positives out of 44 fishes), and most metacercariae were detected under the scales (89.9 per cent). Adult flukes were obtained from the small intestine of a rat, 15 days after infection with the metacercariae obtained from Z. platypus. These adult flukes were identified to be the same srecies as those obtained from human hosts. By this survey, new endemic areas of Metagonimus infection were discovered along the Hongcheon river basin and the main source of infection was the fresh water fish, Z. platypus.

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Epidemiological studies on Metagonimus infection along the Hongcheon river, Kangwon province
Korean J Parasitol. 1988;26(3):207-213.
DOI: https://doi.org/10.3347/kjp.1988.26.3.207
Download Citation

Download a citation file in RIS format that can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Reference Manager.
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Epidemiological studies on Metagonimus infection along the Hongcheon river, Kangwon province
Korean J Parasitol. 1988;26(3):207-213.
DOI: https://doi.org/10.3347/kjp.1988.26.3.207
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