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Echinostome Flukes Receovered from Humans in Khammouane Province, Lao PDR

  • Chai, Jong-Yil (Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine) ;
  • Sohn, Woon-Mok (Department of Parasitology and Institute of Health Sciences, Gyeongsang National University School of Medicine) ;
  • Yong, Tai-Soon (Department of Environmental Medical Biology, Institute of Tropical Medicine and Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine) ;
  • Eom, Kee-Seon S. (Department of Parasitology and Medical Research Institute, Chungbuk National University School of Medicine) ;
  • Min, Duk-Young (Department of Microbiology and Immunology, Eulji University School of Medicine) ;
  • Hoang, Eui-Hyug (Korea Association of Health Promotion) ;
  • Phammasack, Bounlay (Department of Hygiene and Prevention, Ministry of Health) ;
  • Insisiengmay, Bounnaloth (Department of Hygiene and Prevention, Ministry of Health) ;
  • Rim, Han-Jong (Department of Parasitology, Korea University College of Medicine)
  • Received : 2012.05.18
  • Accepted : 2012.07.05
  • Published : 2012.09.15

Abstract

Echinostome eggs were detected in 22 (1.1%) of 2,074 people residing in riparian villages along the Mekong River in Khammouane Province, Lao PDR. In order to recover the adult flukes, 9 persons were treated with praziquantel and purged with magnesium salts. A total of 55 echinostome specimens (4 species) were recovered from the 9 persons. Echinostoma revolutum (8 specimens) was recovered from 3 persons, Artyfechinostomum malayanum (8 specimens) was from 2 persons, Echinochasmus japonicus (33 specimens) was from 7 persons, and Euparyphium sp. (6 specimens) was from 1 person. In Lao PDR, only human infections with E. japonicus were previously known. Therefore, the present study describes human infections with E. revolutum, A. malayanum, and Euparyphium sp. for the first time in Lao PDR. These results indicate that the surveyed villages of Khammouane Province, Lao PDR are low-grade endemic foci of echinostomiasis.

Keywords

References

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