Hostname: page-component-76d6cb85b7-2r2wp Total loading time: 0 Render date: 2026-07-13T12:42:01.309Z Has data issue: false hasContentIssue false
  • English
  • Français

Mixed infections with Opisthorchis viverrini and intestinal flukes in residents of Vientiane Municipality and Saravane Province in Laos

Published online by Cambridge University Press:  12 April 2024

J.-Y. Chai ,
J.-H. Park ,
E.-T. Han ,
S.-M. Guk ,
E.-H. Shin ,
A. Lin ,
J.-L. Kim ,
W.-M. Sohn ,
T.-S. Yong  and
K.S. Eom
...Show all authors
J.-Y. Chai*
Affiliation:
Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, 110-799, Korea:
J.-H. Park
Affiliation:
Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, 110-799, Korea:
E.-T. Han
Affiliation:
Department of Parasitology, College of Medicine, Kangwon National University, Chuncheon, 200-701, Korea:
S.-M. Guk
Affiliation:
Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, 110-799, Korea:
E.-H. Shin
Affiliation:
Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, 110-799, Korea:
A. Lin
Affiliation:
Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, 110-799, Korea:
J.-L. Kim
Affiliation:
Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul, 110-799, Korea:
W.-M. Sohn
Affiliation:
Department of Parasitology and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 660-751, Korea:
T.-S. Yong
Affiliation:
Department of Parasitology, College of Medicine, Yonsei University, Seoul, 120-752, Korea:
K.S. Eom
Affiliation:
Chungbuk National University, Chongju, 361-763, Korea:
D.-Y. Min
Affiliation:
Hanyang University, Seoul, 133-791, Korea:
E.-H. Hwang
Affiliation:
Korea Association of Health Promotion, Seoul, 157-704, Korea
B. Phommmasack
Affiliation:
Department of Hygiene and Prevention, Ministry of Public Health, Vientiane, Lao PDR:
B. Insisiengmay
Affiliation:
Department of Hygiene and Prevention, Ministry of Public Health, Vientiane, Lao PDR:
H.-J. Rim
Affiliation:
Department of Parasitology, Korea University, Seoul, 136-705, Korea:
*
*Fax: +82 2 7656142 Email: cjy@snu.ac.kr
Get access Rights & Permissions [Opens in a new window]

Abstract

Faecal examinations for helminth eggs were performed on 1869 people from two riverside localities, Vientiane Municipality and Saravane Province, along the Mekong River, Laos. To obtain adult flukes, 42 people positive for small trematode eggs (Opisthorchis viverrini, heterophyid, or lecithodendriid eggs) were treated with a 20–30 mg kg−1 single dose of praziquantel and purged. Diarrhoeic stools were then collected from 36 people (18 in each area) and searched for helminth parasites using stereomicroscopes. Faecal examinations revealed positive rates for small trematode eggs of 53.3% and 70.8% (average 65.2%) in Vientiane and Saravane Province, respectively. Infections with O. viverrini and six species of intestinal flukes were found, namely, Haplorchis taichui, H. pumilio, H. yokogawai, Centrocestus caninus, Prosthodendrium molenkampi, and Phaneropsolus bonnei. The total number of flukes collected and the proportion of fluke species recovered were markedly different in the two localities; in Vientiane, 1041 O. viverrini (57.8 per person) and 615 others (34.2 per person), whereas in Saravane, 395 O. viverrini (21.9 per person) and 155207 others (8622.6 per person). Five people from Saravane harboured no O. viverrini but numerous heterophyid and/or lecithodendriid flukes. The results indicate that O. viverrini and several species of heterophyid and lecithodendriid flukes are endemic in these two riverside localities, and suggest that the intensity of infection and the relative proportion of fluke species vary by locality along the Mekong River basin.

Information

Type
Research Article
Information
Journal of Helminthology , Volume 79 , Issue 3 , September 2005 , pp. 283 - 289
Copyright
Copyright © Cambridge University Press 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Chai, J.Y. & Hongvanthong, B. (1998) A small-scale survey of intestinal helminthic infections among the residents near Pakse, Laos. Korean Journal of Parasitology 36, 55–58.CrossRefGoogle ScholarPubMed
Chai, J.Y. & Lee, S.H. (2002) Food-borne intestinal trematode infections in the Republic of Korea. Parasitology International 51, 129–154.CrossRefGoogle ScholarPubMed
Chai, J.Y., Murrell, K.D. & Lymbry, A. (2005) Fishborne parasitic zoonoses: status and issues. International Journal for Parasitology (in press).Google Scholar
Ditrich, O., Scholtz, T. & Giboda, M. (1990) Occurrence of some medically important flukes (Trematoda: Opisthorchiidae and Heterophyidae) in Nam Ngum water reservoir. Southeast Asian Journal of Tropical Medicine and Public Health 21, 482–488.Google ScholarPubMed
Ditrich, O., Giboda, M., Scholtz, T. & Beer, S.A. (1992) Comparative morphology of eggs of the Haplorchiinae (Trematoda: Heterophyidae) and some other medically important heterophyid and opisthorchiid flukes. Folia Parasitologica 39, 123–132.Google ScholarPubMed
Giboda, M., Ditrich, O., Scholtz, T., Viengsay, T. & Bouaphanh, S. (1991) Human Opisthorchis and Haplorchis infections in Laos. Transactions of the Royal Society of Tropical Medicine and Hygiene 85, 538–540.CrossRefGoogle ScholarPubMed
Kaewkes, S., Elkins, D.B., Sithithaworn, P. & Haswell-Elkins, M.R. (1991) Comparative studies on the morphology of the eggs of Opisthorchis viverrini and lecithodendriid trematodes. Southeast Asian Journal of Tropical Medicine and Public Health 22, 623–630.Google ScholarPubMed
Kobayashi, J., Vannachone, B., Xeutvongsa, A., Manivong, K., Ogawa, S., Sato, Y. & Pholsena, K. (1996) Prevalence of intestinal parasitic infection among children in two villages in Lao PDR. Southeast Asian Journal of Tropical Medicine and Public Health 27, 562–565.Google ScholarPubMed
Kobayashi, J., Vannachone, B., Sato, Y., Manivong, K., Nambanya, S. & Inthakone, S. (2000) An epidemiological study on Opisthorchis viverrini infection in Lao villages. Southeast Asian Journal of Tropical Medicine and Public Health 31, 128–132.Google ScholarPubMed
Manning, G.S. & Lertprasert, P. (1973) Studies on the life cycle of Phaneropsolus bonnei and Prosthodendrium molenkampi in Thailand. Annals of Tropical Medicine and Parasitology 67, 361–365.CrossRefGoogle ScholarPubMed
Manning, G.S., Lertprasert, P., Watanasirmkit, K. & Chetty, C. (1971) A description of newly discovered intestinal parasites endemic to northeastern Thailand. Journal of the Medical Association of Thailand 54, 466–474.Google ScholarPubMed
Pholsena, K., Sayaseng, B., Hongvanthong, B. & Vanisaveth, V. (1991) The prevalence of helminth infection in Ban Nanin, Laos. Southeast Asian Journal of Tropical Medicine and Public Health 22, 137–138.Google ScholarPubMed
Radomyos, P., Bunnag, D. & Harinasuta, T. (1984) Worms recovered in stool following praziquantel treatment. Arzneimittel-Forschung/Drug Research 34, 1215–1217.Google Scholar
Radomyos, P., Radomyos, B. & Tungtrongchitr, A. (1994) Multi-infection with helminths in adults from northeast Thailand as determined by post-treatment fecal examination of adult worms. Tropical Medicine and Parasitology 45, 133–135.Google ScholarPubMed
Rim, H.J. (1982) Opisthorchiasis pp.109–121 in Steele, J.H. (Eds) CRC handbook series in zoonoses, Section C: Parasitic zoonoses, Vol. III (trematode zoonoses) . Boca Raton, Florida CRC Press.Google Scholar
Rim, H.J., Chai, J.Y., Min, D.Y., Cho, S.Y., Eom, K.S., Hong, S.J., Sohn, W.M., Yong, T.S., Deodato, G., Standgaard, H., Phommasack, B., Yun, C.Y. & Hoang, E.H. (2003) Prevalence of intestinal parasite infections on a national scale among primary schoolchildren in Laos. Parasitology Research 91, 267–272.CrossRefGoogle ScholarPubMed
Segal, D.B., Humphrey, J.M., Edwards, S.J. & Kirby, M.D. (1968) Parasites of man and domestic animals in Vietnam, Thailand, Laos, and Cambodia. Experimental Parasitology 23, 412–464.CrossRefGoogle ScholarPubMed
Scholtz, T., Ditrich, O. & Giboda, M. (1990) Larval stages of medically important flukes (Trematoda) from Vientiane Province, Laos. Part, I. metacercariae. Annales de Parasitologie Humaine et Comparée 65, 238–243.CrossRefGoogle Scholar
Sornmani, S., Pathammavong, O., Bunnag, T., Impand, P., Intarakhao, C. & Thirachantra, S. (1974) An epidemiological survey of human intestinal parasites in Vientiane, Laos. Southeast Asian Journal of Tropical Medicine and Public Health 5, 541–546.Google ScholarPubMed
Tesana, S. Srisawangwonk, T. Kaewkes, S. Sithithaworn, P. Kanla, P. & Arunyanart, C. (1991) Eggshell morphology of the small eggs of human trematodes in Thailand. Southeast Asian Journal of Tropical Medicine and Public Health 22, 631–636.Google ScholarPubMed
Yu, S.H. & Mott, K.E. (1994) Epidemiology and morbidity of food-borne intestinal trematode infections. Tropical Diseases Bulletin 91, R125–R152.Google Scholar
Waikagul, J. (1991) Intestinal fluke infections in southeast Asia. Southeast Asian Journal of Tropical Medicine and Public Health 22, Suppl. 158–162.Google ScholarPubMed
World Health Organization (1995) Control of foodborne trematode infections. WHO Technical Report Series No. 849, pp. 1–157.Google Scholar
World Health Organization (2004) Report of Joint WHO/FAO Workshop on Food-borne trematode infections in Asia, Ha Noi, Vietnam, 26–28 November, 2002. WHO, WPRO, pp. 1–58.Google Scholar