Parasites, Hosts and Diseases

The Korea Society for Parasitology and Tropical Medicine (대한기생충학·열대의학회)
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Echinostoma ilocanum Infection in Two Residents of Savannakhet 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 Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine) ;
  • Cho, Jaeeun (Korea Association of Health Promotion) ;
  • Eom, Keeseon S. (Department of Parasitology and Medical Research Institute, Parasite Resource Bank, Chungbuk 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) ;
  • Min, Duk-Young (Department of Microbiology and Immunology, Eulji University School of Medicine) ;
  • Hoang, Eui-Hyug (Korea Association of Health Promotion) ;
  • Phommasack, 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 : 2018.01.12
  • Accepted : 2018.01.31
  • Published : 2018.02.28
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Abstract

Adult specimens of Echinostoma ilocanum (Garrison, 1908) Odhner, 1911 (Trematoda: Echinostomatidae) were recovered from 2 riparian people who resided along the Mekong River in Savannakhet Province, Lao PDR. In fecal examinations done by the Kato-Katz technique, they revealed echinostome eggs together with eggs of Opisthorchis viverrini (and minute intestinal fluke eggs) and hookworms. To recover the adult flukes, they were treated with praziquantel 30-40 mg/kg in a single dose and purged with magnesium salts. A total of 658 adult fluke specimens were recovered from the 2 people; 456 from case 1 and 202 from case 2. Specimens from case 1 consisted of 335 echinostomes (301 E. ilocanum and 34 species undetermined), 120 O. viverrini, and 1 Haplorchis taichui, and those from case 2 consisted of 36 E. ilocanum, 134 O. viverrini, and 32 H. taichui. Thus, the number of E. ilocanum specimens was 337 in total (average per person, 168.5). From this study, it is suggested that foodborne intestinal flukes and liver flukes are highly prevalent along the Mekong River in Savannakhet Province. The present report describes for the first time human infections with E. ilocanum in Lao PDR.

Keywords

References

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