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

J. Y. Chai; L. H. Park; E. T. Han; S. M. Guk; E. H. Shin; A. Lin; J. L. Kim; W. M. Sohn; T. S. Yong; K. S. Eom; D. Y. Min; E. H. Hwang; B. Phommmasack; B. Insisiengmay; H. J. Rim

doi:10.1079/JOH2005302

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

J. Y. Chai, L. H. Park, E. T. Han, S. M. Guk, E. H. Shin, A. Lin, J. L. Kim, W. M. Sohn, T. S. Yong, K. S. Eom, D. Y. Min, E. H. Hwang, B. Phommmasack, B. Insisiengmay, H. J. Rim

Department of Environmental Medical Biology

Research output: Contribution to journal › Article › peer-review

63 Citations (Scopus)

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.

Original language	English
Pages (from-to)	283-289
Number of pages	7
Journal	Journal of Helminthology
Volume	79
Issue number	3 SPEC. ISS.
DOIs	https://doi.org/10.1079/JOH2005302
Publication status	Published - 2005 Sept

Bibliographical note

Funding Information:
We are grateful to Dr Sithat Insisiengmay and the staff of the Center for Laboratory and Epidemiology, Department of Hygiene and Prevention, Ministry of Public Health, Vientiane, and staff at the Station of Malariology and Parasitology, Saravane Provincial Health Department, Saravane, Lao PDR, for their help during the collection of faecal samples from villagers and for the preparation of Kato-Katz smears. We also thank the staff of the Korea Association of Health Promotion, Seoul, Republic of Korea, who participated in the Korea-Laos Cooperation Project on Parasite Control in Lao PDR (1999–2004). This study was supported by BK21 Human Life Sciences, Ministry of Education, Republic of Korea.

All Science Journal Classification (ASJC) codes

Parasitology
Animal Science and Zoology

Access to Document

10.1079/JOH2005302

Cite this

Chai, J. Y., Park, L. H., Han, E. T., Guk, S. M., Shin, E. H., Lin, A., Kim, J. L., Sohn, W. M., Yong, T. S., Eom, K. S., Min, D. Y., Hwang, E. H., Phommmasack, B., Insisiengmay, B., & Rim, H. J. (2005). Mixed infections with Opisthorchis viverrini and intestinal flukes in residents of Vientiane Municipality and Saravane Province in Laos. Journal of Helminthology, 79(3 SPEC. ISS.), 283-289. https://doi.org/10.1079/JOH2005302

@article{081faeeaa8584a979f3654b413f4d0e5,

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

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.",

author = "Chai, {J. Y.} and Park, {L. H.} and Han, {E. T.} and Guk, {S. M.} and Shin, {E. H.} and A. Lin and Kim, {J. L.} and Sohn, {W. M.} and Yong, {T. S.} and Eom, {K. S.} and Min, {D. Y.} and Hwang, {E. H.} and B. Phommmasack and B. Insisiengmay and Rim, {H. J.}",

note = "Funding Information: We are grateful to Dr Sithat Insisiengmay and the staff of the Center for Laboratory and Epidemiology, Department of Hygiene and Prevention, Ministry of Public Health, Vientiane, and staff at the Station of Malariology and Parasitology, Saravane Provincial Health Department, Saravane, Lao PDR, for their help during the collection of faecal samples from villagers and for the preparation of Kato-Katz smears. We also thank the staff of the Korea Association of Health Promotion, Seoul, Republic of Korea, who participated in the Korea-Laos Cooperation Project on Parasite Control in Lao PDR (1999–2004). This study was supported by BK21 Human Life Sciences, Ministry of Education, Republic of Korea.",

year = "2005",

month = sep,

doi = "10.1079/JOH2005302",

language = "English",

volume = "79",

pages = "283--289",

journal = "Journal of Helminthology",

issn = "0022-149X",

publisher = "Cambridge University Press",

number = "3 SPEC. ISS.",

}

Chai, JY, Park, LH, Han, ET, Guk, SM, Shin, EH, Lin, A, Kim, JL, Sohn, WM, Yong, TS, Eom, KS, Min, DY, Hwang, EH, Phommmasack, B, Insisiengmay, B & Rim, HJ 2005, 'Mixed infections with Opisthorchis viverrini and intestinal flukes in residents of Vientiane Municipality and Saravane Province in Laos', Journal of Helminthology, vol. 79, no. 3 SPEC. ISS., pp. 283-289. https://doi.org/10.1079/JOH2005302

TY - JOUR

T1 - Mixed infections with Opisthorchis viverrini and intestinal flukes in residents of Vientiane Municipality and Saravane Province in Laos

AU - Chai, J. Y.

AU - Park, L. H.

AU - Han, E. T.

AU - Guk, S. M.

AU - Shin, E. H.

AU - Lin, A.

AU - Kim, J. L.

AU - Sohn, W. M.

AU - Yong, T. S.

AU - Eom, K. S.

AU - Min, D. Y.

AU - Hwang, E. H.

AU - Phommmasack, B.

AU - Insisiengmay, B.

AU - Rim, H. J.

N1 - Funding Information: We are grateful to Dr Sithat Insisiengmay and the staff of the Center for Laboratory and Epidemiology, Department of Hygiene and Prevention, Ministry of Public Health, Vientiane, and staff at the Station of Malariology and Parasitology, Saravane Provincial Health Department, Saravane, Lao PDR, for their help during the collection of faecal samples from villagers and for the preparation of Kato-Katz smears. We also thank the staff of the Korea Association of Health Promotion, Seoul, Republic of Korea, who participated in the Korea-Laos Cooperation Project on Parasite Control in Lao PDR (1999–2004). This study was supported by BK21 Human Life Sciences, Ministry of Education, Republic of Korea.

PY - 2005/9

Y1 - 2005/9

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=23944483402&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=23944483402&partnerID=8YFLogxK

U2 - 10.1079/JOH2005302

DO - 10.1079/JOH2005302

M3 - Article

C2 - 16153322

AN - SCOPUS:23944483402

SN - 0022-149X

VL - 79

SP - 283

EP - 289

JO - Journal of Helminthology

JF - Journal of Helminthology

IS - 3 SPEC. ISS.

ER -

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

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this