Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-27T08:56:22.749Z Has data issue: false hasContentIssue false

Current status of fasciolosis in Vietnam: an update and perspectives

Published online by Cambridge University Press:  13 November 2015

T.D. Bui*
Affiliation:
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay district, Ha Noi, Vietnam Fundamental and Applied Research on Animal and Health, Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liège, Boulevard de Colonster 20, 4000Liège, Belgium
P.N. Doanh
Affiliation:
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Road, Cau Giay district, Ha Noi, Vietnam
C. Saegerman
Affiliation:
Fundamental and Applied Research on Animal and Health, Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liège, Boulevard de Colonster 20, 4000Liège, Belgium
B. Losson
Affiliation:
Fundamental and Applied Research on Animal and Health, Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liège, Boulevard de Colonster 20, 4000Liège, Belgium

Abstract

Vietnam is recognized to be endemic for fasciolosis. However, most of the available publications have not been published in international journals. This review is based on national and international Vietnamese publications and highlights the current status of fasciolosis in Vietnam. It also provides some information available for neighbouring countries. Updated data on responsible species, distribution, transmission and control aspects are summarized. The central region of Vietnam is reported as being highly endemic for fasciolosis, with a high number of human patients (more than 20,000 in 2011). Fasciola gigantica is reported to be the main species in Vietnam. However, hybrids between F. gigantica and F. hepatica were identified. Both humans and animals are infected by the ingestion of raw vegetables and possibly contaminated drinking water. Three lymnaeid snail species (Austropeplea viridis, Radix auricularia and Radix rubiginosa) may act as intermediate hosts of Fasciola spp. However, due to the likely misidentification of snail species and cercariae during the past decade the critical analysis of published data is difficult. A better understanding of transmission aspects of fasciolosis would allow the implementation of preventive measures of this important neglected zoonotic disease.

Type
Review Article
Copyright
Copyright © Cambridge University Press 2015 

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.)

References

Anderson, N., Luong, T.T., Vo, N.G., Bui, K.L., Smooker, P.M. & Spithill, T.W. (1999) The sensitivity and specificity of two methods for detecting Fasciola infections in cattle. Veterinary Parasitology 83, 1524.Google Scholar
Bui, K.L., Luong, T.T., Nguyen, T.L.A. & Do, T.T. (1995). Research on applied ELISA reaction with excretory-secretory antigen in diagnosis of fasciolosis in buffaloes. Journal of Veterinary Science and Techique 2, 326332.Google Scholar
Bui, K.L., Do, T.T., Le, N.M., Sasaki, O. & Yoshihara, S. (2003) Application of agar gel diffusion test to the diagnosis of Fasciolosis in cattle and buffaloes in the Red River Delta of Vietnam. Japan Agricultural Research Quarterly 37, 201205.Google Scholar
Bui, T.D. (2012) Application and development of a multiplex PCR to detect Fasciola gigantica infection in Lymnaea viridis . Journal of Military and Pharmaco-medicine 10, 118121 (in Vietnamese).Google Scholar
Bui, T.D. & Hoang, H.V. (2011) Evaluation and comparision of two techniques to detect fasciolosis in Lymnaea viridis snails. pp. 1459–1463 in Proceedings of the 4th National Scientific Conference on Ecology and Biological Resources. Hanoi, Science and Techniques Publishing House (in Vietnamese).Google Scholar
Bui, T.D., Madsen, H. & Dang, T.T. (2010) Distribution of freshwater snails in family-based VAC ponds and associated waterbodies with special reference to intermediate hosts of fish-borne zoonotic trematodes in Nam Dinh Province, Vietnam. Acta Tropica 116, 1523.Google Scholar
Bui, T.D., Pham, N.D., Dang, T.T., Ho, T.L., Losson, B. & Caron, Y. (2013) Morphological and molecular characterization of lymnaeid snails and their potential role in transmission of Fasciola spp. in Vietnam. The Korean Journal of Parasitology 51, 657662.Google Scholar
Caron, Y., Rondelaud, D. & Losson, B. (2008) The detection and quantification of a digenean infection in the snail host with special emphasis on Fasciola sp. Parasitology Research 103, 735744.Google Scholar
Chen, M.G. (1991) Fasciola hepatica infection in China. Southeast Asian Journal of Tropical Medicine and Public Health 22, 356360.Google Scholar
Dalton, J.P. (1999) Fasciolosis. 561 pp. Wallingford, UK, CABI Publishing.Google Scholar
Dang, N.T., Thai, T.B. & Pham, V.M. (1980) Identification of invertebrates in Northern Vietnam. 525 pp. Hanoi, Science and Technology Publishing House (in Vietnamese).Google Scholar
Dang, T.T. & Nawa, Y. (2005) Fasciola and fascioliasis in Vietnam. Asia Parasitology 1, 5760.Google Scholar
Dang, T.T., Le, Q.H. & Cao, V.V. (2003) DNA identification of Fasciola spp. in man and cattle in Central Vietnam. Vietnamese Journal of Biology 25, 4752 (in Vietnamese).Google Scholar
Do, D.N., Pham, V.L., Pham, N.D., Nguyen, V.H. & Nguyen, T.M. (2006) Animal raising practice and liver fluke prevalence in cattle in the Daklak province. Journal of Veterinary Science and Technique 8, 6872 (in Vietnamese).Google Scholar
Do, N.A. & Nguyen, K.L. (2012) Identification of Fasciola spp. in cattle and humans collected from North region using morphological and molecular methods. Journal of Military Pharmaco-Medicine KC10, 122129 (in Vietnamese).Google Scholar
Do, N.A., Nguyen, D.B., Nguyen, K.L., Dang, T.C.T. & Le, B.Q. (2011) Identification of Fasciola spp. in cattle pathogens collected from middle region and western highland (Vietnam) using mitochondrial CO1 gene marker. Journal of Military Phamaco-Medicine 5, 4346 (in Vietnamese).Google Scholar
Doan, T.T., Nguyen, T.G.T., Nguyen, V.D., Do, A.T., Do, M.H. & Nguyen, Q.N. (2007) The situation of patients with liver damage caused by liver fluke (Fasciola spp.) in the hepatobiliary surgery faculty, Vietnamese-Germany hospital, 2006. pp. 92–95 in Proceedings on parasitic diseases and food safety, Hanoi Medical University, Vietnam (in Vietnamese).Google Scholar
Fang, W., Li, T.M., Li, K.R., Chen, F. & Liu, Y.H. (2014) Experimental infection of Galba pervia, Radix swinhoei and Physa acuta with Fasciola hepatica in Dali. Yunnan Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 32, 285288 (in Chinese).Google ScholarPubMed
Geurden, T., Somers, R., Thanh, N.T., Vien, L.V., Nga, V.T., Giang, H.H., Dorny, P., Giao, H.K. & Vercruysse, J. (2008) Parasitic infections in dairy cattle around Hanoi, northern Vietnam. Veterinary Parasitology 153, 384388.CrossRefGoogle ScholarPubMed
Giang, H.H., Thanh, N.T.G. & Thanh, D.T.H. (2008) Prevalence of gastrointestinal parasites of dairy cattle in Ha Noi and surrounding areas. Journal of Veterinary Science and Technique 15, 5862 (in Vietnamese).Google Scholar
Ha, M.T. (2008) Situation of gastrointestinal parasite in cattle in Son La province, epidemiology of fasciolosis and prevention methods. MSc thesis, Hanoi Agriculture University, Vietnam (in Vietnamese).Google Scholar
Ho, T.T. & Nguyen, N.P. (1987) Result of investigation on fascioliasis incidence in cattle prevention and treatment measures. Journal of Science and Agricultural Technique 2, 8588 (in Vietnamese).Google Scholar
Ho, V.M., Le, Q.H., Tran, T.K.D. & Dang, T.T. (2000) Identification of Fasciola spp. in human and cattle by DNA, fasciolosis clinical symptoms, diagnosis technique, treatment result with emitin, and biological characteristics in Binh Dinh province. Science Results Collection Report. 125 pp. Binh Dinh, Vietnam, Ministry of Science (in Vietnamese).Google Scholar
Hoang, V.H., Pham, N.D., Pham, V.L. & Dang, T.C.T. (2011) Prevalence of fasciolosis in cattle of Vietnam. Journal of Veterinary Science and Technique 18, 8083 (in Vietnamese).Google Scholar
Holland, W.G., Luong, T.T., Nguyen, L.A., Do, T.T. & Vercruysse, J. (2000) The epidemiology of nematode and fluke infections in cattle in the Red River Delta in Vietnam. Veterinary Parasitology 93, 141147.Google Scholar
Huynh, H.Q. & Nguyen, V.K. (2007) Pediatric fascioliasis: clinical and paraclinical manifestations and theurapeutic efficacy of triclabendazole (TCZ) at some central and west-highland provinces, Vietnam, 2005–2007. pp. 70–78 in Proceedings on bio-parasitological diseases and food safety, Hanoi Medical University, Vietnam (in Vietnamese).Google Scholar
Huynh, H.Q., Nguyen, V.K. & Dinh, T.S. (2007) Ultrasound images of the hepato-biliary lesions caused by Fasciola gigantica . pp. 54–62 in Proceedings on parasitic diseases and food safety, Hanoi Medical University, Vietnam (in Vietnamese).Google Scholar
Itagaki, T., Sakaguchi, K., Terasaki, K., Sasaki, O., Yoshihara, S. & Van Dung, T. (2009) Occurrence of spermic diploid and aspermic triploid forms of Fasciola sp. in Vietnam and their molecular characterization based on nuclear and mitochondrial DNA. Parasitology International 58, 8185.Google Scholar
Kaset, C., Eursitthichai, V., Vichasri-Grams, S., Viyanant, V. & Grams, R. (2010) Rapid identification of lymnaeid snails and their infection with Fasciola gigantica in Thailand. Experimental Parasitology 126, 482488.Google Scholar
Le, H.K., Nguyen, V.K. & Huynh, H.L. (2001) The situation of liver fluke infection in cattle according to different ecological regions of Vietnam. Journal of Veterinary Science and Technique 8, 3640 (in Vietnamese).Google Scholar
Le, T.A. & Nguyen, K.L. (2013) Zoonotic helminth infections diagnosed at 103 hospital (2009–2012). Journal of Military and Pharmaco-Medicine 4, 36 (in Vietnamese).Google Scholar
Le, T.H., Nguyen, V.D., Ngo, T.H., Kim, V.V., Agatsuma, T., Blair, D. & McManus, D.P. (2006) Molecular identification and geographic distribution of food and water-borne parasitic zoonosis. pp. 75 in Proceedings on the 5th seminar on food- and water-borne parasitic zoonoses, Mahidol University, Thailand.Google Scholar
Le, T.H., De, N.V., Agatsuma, T., Blair, D., Vercruysse, J., Dorny, P., Nguyen, T.G. & McManus, D.P. (2007a) Molecular confirmation that Fasciola gigantica can undertake aberrant migrations in human hosts. Journal of Clinical Microbiology 45, 648650.Google Scholar
Le, T.H., Nguyen, V.D., Nguyen, T.B.N., Nguyen, Q.D., Dang, T.T., Vu, T.T., Nguyen, T.G.T., Le, T.X., Nguyen, V.C. & Blair, D. (2007b) Molecular based confirmation of hybridization between Fasciola gigantica and Fasciola hepatica in liver fluke population infecting human and animals in Vietnam. Ho Chi Minh Journal of Medicine 11, 8997 (in Vietnamese).Google Scholar
Le, T.H., De, N.V., Agatsuma, T., Thi Nguyen, T.G., Nguyen, Q.D., McManus, D.P. & Blair, D. (2008) Human fascioliasis and the presence of hybrid/introgressed forms of Fasciola hepatica and Fasciola gigantica in Vietnam. International Journal for Parasitology 38, 725730.Google Scholar
Le, T.X., Nguyen, T.H. & Waikagul, J. (2005) Cutaneous fascioliasis: a case report in Vietnam. The American Journal of Tropical Medicine and Hygiene 72, 508509.Google Scholar
Le, V.T.H. (2010) Fasciolosis in cattle in Nghe An. Journal of Veterinary Science and Technique 17, 3033 (in Vietnamese).Google Scholar
Liu, G.H., Gasser, R.B., Young, N.D., Song, H.Q., Ai, L. & Zhu, X.Q. (2014) Complete mitochondrial genomes of the ‘intermediate form’ of Fasciola and Fasciola gigantica, and their comparison with F. hepatica . Parasites & Vectors 7, 210.Google Scholar
Luong, T.T. & Bui, K.L. (1996) Incidence of liver fluke infestation and results of treatment using Fasinex in buffaloes and cattle. Journal of Vetenary Science and Technique 3, 7481 (in Vietnamese).Google Scholar
Mas-Coma, S., Esteban, J. & Bargue, M. (1999) Epidemiology of human fasciolosis: a review and proposed new classification. Bulletin of the World Health Organization 77, 340346.Google ScholarPubMed
Mas-Coma, S., Valero, M.A. & Bargues, M.D. (2009) Fasciola, lymnaeids and human fascioliasis, with a global overview on disease transmission, epidemiology, evolutionary genetics, molecular epidemiology and control. Advances in Parasitology 69, 41146.Google Scholar
Nguyen, D.D. (1995) Investigation on gastrointestinal helminth prevalence in deers and prevention methods. MSc thesis, Hanoi Agricultural University, Vietnam (in Vietnamese).Google Scholar
Nguyen, D.T., Nguyen, V.T., Nguyen, T.S., Le, D.Q. & Huynh, V.S. (2010) Fasciolosis in cattle and larval stage in intermediate hosts in some provinces of South and Central Vietnam. Journal of Veterinary Science and Technique 17, 5257 (in Vietnamese).Google Scholar
Nguyen, H.H. (2009) Investigations on liver fluke infection in cows in some areas of Dong Thap province. Journal of Veterinary Science and Technique 16, 5155 (in Vietnamese).Google Scholar
Nguyen, H.H. (2011) Prevalence of fasciolosis in cows in some provinces of Cuu Long River Delta and effective prevention. Journal of Veterinary Science and Technique 18, 2938 (in Vietnamese).Google Scholar
Nguyen, Q.D. & Le, T.H. (2007) Morphology and molecular characterization of Fasciola sp. collected from cattle in Cao Bang and Nghe An provinces. pp. 46–53 in Proceedings of applied molecular medicine in parasitology research, Hanoi Medical University, Vietnam (in Vietnamese).Google Scholar
Nguyen, S.T., Amer, S., Ichikawa, M., Itagaki, T., Fukuda, Y. & Nakai, Y. (2012a) Molecular identification of Fasciola spp. (Digenea: Platyhelminthes) in cattle from Vietnam. Parasite 19, 8589.Google Scholar
Nguyen, S.T., Nguyen, D.T., Van Nguyen, T., Huynh, V.V., Le, D.Q., Fukuda, Y. & Nakai, Y. (2012b) Prevalence of Fasciola sp. in cattle and of its intermediate host Lymnaea snails in central Vietnam. Tropical Animal Health and Production 44, 18471853.Google Scholar
Nguyen, T.G.T., Van De, N., Vercruysse, J., Dorny, P. & Le, T.H. (2009) Genotypic characterization and species identification of Fasciola spp. with implications regarding the isolates infecting goats in Vietnam. Experimental Parasitology 123, 354361.Google Scholar
Nguyen, T.G.T., Le, T.H., De, N.V., Doan, T.T., Dao, T.H., Vercruysse, J. & Dorny, P. (2010) Assessment of a 27-kDa antigen in enzyme-linked immunosorbent assay for the diagnosis of fasciolosis in Vietnamese patients. Journal of Tropical Medicine and International Health 15, 462467.Google Scholar
Nguyen, T.G.T., Le, T.H., Dao, T.H., Tran, T.L., Praet, N., Speybroeck, N., Vercruysse, J. & Dorny, P. (2011) Bovine fasciolosis in the human fasciolosis hyperendemic Binh Dinh province in Central Vietnam. Acta Tropica 117, 1922.Google Scholar
Nguyen, T.H. & Le, X.H. (2011) Characteristics of Fasciola eggs and adult in Quang Ngai province. Journal of Malaria and Parasitology Diseases Control 6, 5258 (in Vietnamese).Google Scholar
Nguyen, T.H. & Le, X.H. (2012) Investigations on Fasciola sp. infection in cattle and intermediate host in Quang Ngai province. Journal of Malaria and Parasitology Diseases Control 3, 7477 (in Vietnamese).Google Scholar
Nguyen, T.H., Le, T.H. & Giang, H.H. (2008) Identification of liver flukes collected from slaughterhouses in Ha Noi by PCR. Journal of Veterinary Science and Technique 15, 5055 (in Vietnamese).Google Scholar
Nguyen, T.H., Le, Q.H., Le, X.H. & Ta, T.T. (2012) Prevalence of fascioliasis in human in Quang Ngai province. Journal of Malaria and Parasitology Diseases Control 3, 6266 (in Vietnamese).Google Scholar
Nguyen, T.K. (1997a) Fasciolosis prevalence in cattle in Nghe An coastal region and prevention methods. Journal of Veterinary Science and Technique 2, 400402 (in Vietnamese).Google Scholar
Nguyen, T.K. (1997b) Distribution and prevalence of Fasciola sp. larvae in the snail intermediate host in Bac Thai province. pp. 412–414 in The Scientific Result Collection of the Institute of Agricultural Science . Vietnam, Institute of Agricultural Science (in Vietnamese).Google Scholar
Nguyen, T.K. & Pham, N.V. (1997) Investigation on prevalence of Fasciola spp. in cattle, in snails (intermediate host) in Ha Bac province and prevention methods. pp. 407–411 in The Science Results of Vietnam Academy of Agricultural Science. Vietnam, Academy of Agricultural Science (in Vietnamese).Google Scholar
Nguyen, T.K.L. (2001) Relationship between the prevalence of Fasciola infection in snail and in cattle in Dong Hy and Phu Luong districts, Thai Nguyen province. Journal of Science and Forestry Technology 3, 107110 (in Vietnamese).Google Scholar
Nguyen, T.K.L., Nguyen, K.Q., Phan, D.L. & Nguyen, T.H. (1997) Intestinal helminth infection of goat herds in Bac Thai province. Journal of Veterinary Science and Technique 1, 4953 (in Vietnamese).Google Scholar
Nguyen, T.K.L., Phan, D.L., Nguyen, K.Q. & Nguyen, V.Q. (1998) The fluctuation of helminth prevalence according to age and season in goats in Bac Thai. Journal of Veterinary Science and Technique 5, 7380 (in Vietnamese).Google Scholar
Nguyen, T.K.L., Phan, D.L., Nguyen, K.Q. & Nguyen, Q.V. (1999) Gastrointestinal helminths in goats and prevention methods. Journal of Science and Forestry technology 1, 4248 (in Vietnamese).Google Scholar
Nguyen, T.K.L., Pham, D.T. & Pham, T.T. (2012) Prevance and density of Fasciola gigantica in cattle in Thai Nguyen province. Journal of Veterinary Science and Technique 7, 1923 (in Vietnamese).Google Scholar
Nguyen, T.K.T. (1996) Research on the fascioliasis of buffaloes in Co Nhue commue from 1987 to 1995. Journal of Agricultural and Food technology 5, 212214 (in Vietnamese).Google Scholar
Nguyen, T.L., Dang, T.T., Do, D.N. & Ha, D.N. (1995) Trematode and cestode larvae in snails of the genus Lymnaea (Lymnaeidae). Journal of Biology 1, 1118 (in Vietnamese).Google Scholar
Nguyen, T.L., Ha, D.N., Nguyen, T.M., Dang, T.T., Do, D.N., Pham, N.D., Nguyen, K.N. & Nguyen, T.C. (1996a) Fasciolosis in dairy cow and prevention method in Ba Vi, Ha Tay. Journal of Veterinary Science and Technique 3, 7680 (in Vietnamese).Google Scholar
Nguyen, T.L., Ha, D.N., Nguyen, V.D., Pham, V.L. & Nguyen, T.M. (1996b) Helminths in cattle in Vietnam. 256 pp. Hanoi, Science and Technology Publishing House (in Vietnamese).Google Scholar
Nguyen, T.L.A., Dao, T.H.T., Doan, H.H., Do, T.T., Nguyen, V.K. & Anderson, N. (2014) The transmission of Fasciola sp. to cattle and contamination of grazing areas with Fasciola eggs in the Red River Delta region of Vietnam. Tropical Animal Health and Production 46, 691696.Google Scholar
Nguyen, V.D. (2012) Status of fasciolosis in Vietnam. Journal of Malaria and Parasitic Diseases 5, 4752 (in Vietnamese).Google Scholar
Nguyen, V.D., Le, T.H. & Waikagul, J. (2006) Plant-borne fascioliasis in Vietnam. pp. 65 in The 5th seminar on food- and water-borne parasitic zoonooses , Mahidol University, Thailand.Google Scholar
Nguyen, V.H. (2011) Investigation on fasciolosis situation in buffaloes in Hai Phong city and clinical symptom of infected buffaloes. MSc thesis, Hanoi Agricultural University (in Vietnamese).Google Scholar
Nguyen, V.K., Le, H.K., Hong, T.T., Jacquiet, P. & Dorchies, P. (1999) Fasciola gigantica and Fasciola hepatica infections of the Vietnamese swamp buffalo (Bubalus bubalis): prevalence and histopathology (mast cells, eosinophils). Revue de Médecine Vétérinaire 150, 645650 (in French).Google Scholar
Nguyen, V.T. & Nguyen, K.L. (2009) Some epidemiological characters of Fasciola spp. transmission in people and cattle in provinces of Hong Delta. Journal of Military and Pharmaco-Medicine 9, 1319 (in Vietnamese).Google Scholar
Pham, D.T., Nguyen, T.K.L. & Hoang, T.N. (2012a) Situation of fasciolosis in cattle in Bac Kan province. Journal of Animal Science and Technology 8, 2631 (in Vietnamese).Google Scholar
Pham, D.T., Nguyen, T.K.L., Tran, N.T. & Tran, T.P.T. (2012b) Research on the contamination of Fasciola gigantica eggs and larvae in the environment. Journal of Veterinary Science and Technique 21, 7681 (in Vietnamese).Google Scholar
Pham, D.T., Nguyen, T.K.L., Lan, N.T.K., Thang, T.N. & Thao, T.T.P. (2014) Research on the survival of Fasciola gigantica eggs and developing time of its larval forms in the enviroment and intermediate hosts. Journal of Agriculture and Rural Development 6, 122126 (in Vietnamese).Google Scholar
Pham, N.D. & Nguyen, T.L. (2005) Morphological characteristics of trematode cercarial groups and identification of Fasciola gigantica cercariae Cobbold, 1885 in Lymnaeid snails in Vietnam. Journal of Biology 27, 3136 (in Vietnamese).Google Scholar
Pham, N.D., Hoang, V.H., Nguyen, V.D. & Dang, T.C.T. (2012) New data on intermediate hosts of Fasciola sp. in Vietnam. Journal of Biology 34, 139144 (in Vietnamese).Google Scholar
Pham, N.D., Nguyen, T.T.H., Hoang, V.H. & Bui, T.D. (2015) The role of two lymnaeids, L. viridis and L. swinhoei in the transmission of Fasciola gigantica in Vietnam. pp. 52–57 in Proceedings of the 42nd Vietnam National Conference on Parasitology, Nghe An, Vietnam (in Vietnamese).Google Scholar
Pham, T.T. (2012) Research on the epidemiology of fasciolosis in cattle in Thai Nguyen province and proposed prevention methods. MSc thesis, Thai Nguyen University of Agriculture and Forestry, Vietnam (in Vietnamese).Google Scholar
Pham, V.L. & Pham, N.D. (2006) Fasciolosis and risk factors for human infections in Dak Lak. Journal of Practical Medicine 9, 4143 (in Vietnamese).Google Scholar
Phan, D.L. (1983) Biological characteristics of Fasciola gigantica and fasciolosis in north Vietnam. Journal of Agricultural Science and Technology 12, 675678 (in Vietnamese).Google Scholar
Phan, D.L., Nguyen, T.K.L. & Nguyen, V.Q. (2002) Parasitic diseases of goats in Vietnam. 216 pp. Hanoi, Agricultural Publishing House (in Vietnamese).Google Scholar
Quang, T.D., Duong, T.H., Richard-Lenoble, D., Odermatt, P. & Khammanivong, K. (2008) Emergence in humans of fasciolosis (from Fasciola gigantica) and intestinal distomatosis (from Fasciolopsis buski) in Laos. Cahier Santé 18. doi: 10.1684/san.2008.0110.Google Scholar
Salzer, H.J. & Schmiedel, S. (2015) Fasciola hepatica in a German traveler returning from Thailand. Journal of Travel Medicine. doi:10.1111/jtm.12205.Google Scholar
Shell, S.C. (1970) How to know the trematodes. 355 pp. Dubuque, Iowa, USA, WM.C. Brown.Google Scholar
Tran, T.T.T. (2006) Investigation on fasciolosis in cattle in My Tu district, Soc Trang province and efficacy trial with Rafoxanid™ and Bilevor-M™. Veterinary degree thesis, Can Tho University, Vietnam (in Vietnamese).Google Scholar
Tran, V.H., Tran, T.K.D., Nguyen, H.C., Phan, H.D. & Pham, T.H. (2001) Fasciolosis in Vietnam. The Southeast Asian Journal of Tropical Medicine and Public Health 32, 4850.Google Scholar
Tran, V.H., Nguyen, T.K.D. & Nguyen, V.C. (2009) Pathological characteristics of human liver fluke infection in Vietnam. Journal of Military and Pharmaco-Medicine 9, 5155 (in Vietnamese).Google Scholar
Tran, V.N. (2008) Fasciolosis in cow in Lap Vo, Lai Vung districts of Dong Thap province and assessement of the efficacy of praziquantel. Thesis for the Degree of Veterinary Surgeon, Can Tho University, Vietnam (in Vietnamese).Google Scholar
Trieu, N.T., Nguyen, V.C. & Huynh, H.Q. (2012) Human fasciolosis in central-highland region of Vietnam and efficacy of interventional measures (2006–2009). Journal of Military and Pharmaco-Medicine KC.10, 130137 (in Vietnamese).Google Scholar
Tum, S., Puotinen, M.L., Skerratt, L.F., Chan, B. & Sothoeun, S. (2007) Validation of a geographic information system model for mapping the risk of fasciolosis in cattle and buffaloes in Cambodia. Veterinary Parasitology 143, 364367.Google Scholar
Vu, D.H. (2009) The role of Fasciola sp. as a cause of diarrhoea and anemia in cattle in Yen Son district. MSc thesis, Thai Nguyen University of Agricultural and Forestry, Vietnam (in Vietnamese).Google Scholar
Vu, D.H. & Nguyen, T.K.L. (2009) The role of liver fluke (Fasciola spp.) as a cause of diarrhoea and anemia in cattle in Yen Son-Tuyen Quang and prevention methods. Journal of Veterinary Science and Technique 16, 6973 (in Vietnamese).Google Scholar
Vu, H.A. (2011) Research on prevalence and risk factors related to fasciolosis in four communes in Ha Noi in 2011. MSc thesis, Hanoi Medical University, Vietnam (in Vietnamese).Google Scholar
Vu, S.N., Do, T.M., Nguyen, T.T. & Nguyen, S.H. (1989) Epidemiological characteristic and control of liver fluke in cattle and buffaloes in Phu Khanh and Daklak provinces. Journal of Agriculture Sciences and Techniques 5, 291 (in Vietnamese).Google Scholar
Wang, C.R., Qiu, J.H., Zhu, X.Q., Han, X.H., Ni, H.B., Zhao, J.P., Zhou, Q.M., Zhang, H.W. & Lun, Z.R. (2006) Survey of helminths in adult sheep in Heilongjiang Province, People's Republic of China. Veterinary Parasitology 140, 378382.Google Scholar
Wannasan, A., Khositharattanakool, P., Chaiwong, P., Piangjai, S., Uparanukraw, P. & Morakote, N. (2014) Identification of Fasciola species based on mitochondrial and nuclear DNA reveals the co-existence of intermediate Fasciola and Fasciola gigantica in Thailand. Experimental Parasitology 146, 6470.Google Scholar
WHO (2007) Report of the WHO informal meeting on use of triclabendazole in fascioliasis control. 39 pp. Geneva, Switzerland, WHO.Google Scholar
Zhang, W.Y., Moreau, E., Hope, J.C., Howard, C.J., Huang, W.Y. & Chauvin, A. (2005) Fasciola hepatica and Fasciola gigantica: comparison of cellular response to experimental infection in sheep. Experimental Parasitology 111, 154159.Google Scholar