Echinostoma aegyptica (Trematoda: Echinostomatidae) infection in five riparian people in Savannakhet Province, Lao PDR

Jong Yil Chai, Bong Kwang Jung, Taehee Chang, Hyejoo Shin, Woon Mok Sohn, Keeseon S. Eom, Tai Soon Yong, Duk Young Min, Bounlay Phammasack, Bounnaloth Insisiengmay, Han Jong Rim

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3 Citations (Scopus)


Human infection with Echinostoma aegyptica Khalil and Abaza, 1924 (Trematoda: Echinostomatidae) is extremely rare. In this study, we confirmed E. aegyptica infection in 5 riparian residents living along the Mekong River in Savannakhet Province, Lao PDR. The patients revealed eggs of Opisthorchis viverrini/minute intestinal flukes, echinostomes, and other parasites in fecal examinations using the Kato-Katz technique. Following treatment with praziquantel 30-40 mg/kg and pyrantel pamoate 10-15 mg/kg in a single dose and purging with magnesium salts, adult specimens of various helminth species were collected. Among the trematodes, echinostome flukes of 4.5-7.6 mm in length (n = 134; av. 22.3 specimens per case) were of taxonomic interest and subjected in this study. The flukes were morphologically characterized by having total 43-45 collar spines arranged in 2 alternating rows (corner spines usually 5 on each side) and compatible with previous descriptions of E. aegyptica. The patients were mixed-infected with other helminths, so specific clinical manifestations due to this echinostome fluke were difficult to determine. The present paper describes for the first time human E. aegyptica infections in Lao PDR. This is the second report of human infection (2nd-6th cases) with E. aegyptica in the world following the first one from China.

Original languageEnglish
Pages (from-to)67-72
Number of pages6
JournalKorean Journal of Parasitology
Issue number1
Publication statusPublished - 2020 Feb

Bibliographical note

Publisher Copyright:
© 2020, Korean Society for Parasitology and Tropical Medicine.

All Science Journal Classification (ASJC) codes

  • Parasitology
  • Infectious Diseases


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