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Year : 2017  |  Volume : 10  |  Issue : 4  |  Page : 1068
Wandering dog should not be the reservoir host for opisthorchiasis in highly endemic area, Thailand

Suvannhabhumi Clinical Training, Research and Development Center, Institute of Natural Medicine Science Development and Establishment Project, Surindra Rajabhat University, Surin Province, Thailand

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Date of Web Publication5-Oct-2017

How to cite this article:
Wiwanitkit V. Wandering dog should not be the reservoir host for opisthorchiasis in highly endemic area, Thailand. Ann Trop Med Public Health 2017;10:1068

How to cite this URL:
Wiwanitkit V. Wandering dog should not be the reservoir host for opisthorchiasis in highly endemic area, Thailand. Ann Trop Med Public Health [serial online] 2017 [cited 2020 Aug 10];10:1068. Available from:

Dear Editor,

Liver fluke infestation is an important trematode infestation.[1] In Thailand, a tropical country in Southeast Asia, there is a high prevalence of this infection.[1] It is to be noted that this infestation can result in Cholangiocarcinoma.[2] An interesting little mentioned aspect of Cholangiocarcinogenesis is; it plays the role of a reservoir host in connecting the transmission cycle of Opisthorchiasis. The dog and cat are the two widely mentioned reservoir hosts for Opisthorchis spp. Here, the author would like to share the experience of examination survey of wandering dogs from an endemic area. From several sites of survey, it was found that there is no prevalence of Opisthorchis spp. in the collected stool samples, obtained from dogs. A recent study also showed an important finding that dogs which live with human beings in Thailand, has no Opisthorchiasis; whereas the human beings have.[3] This implies that adog should not be the reservoir host for Opisthorchiasis in a highly endemic area. The concern should be set on cats. The recent report showed a very high prevalence of Opisthorchiasis among the cats in Thailand. The reason is; cat eats fish and the local people usually feed a cat with the raw fish. These infected cats usually live in the river banks areas in the villages with the problem of Opisthorchiasis and Cholangiocarcinoma.[4]

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There are no conflicts of interest.

   References Top

Sripa B, Pairojkul C. Cholangiocarcinoma: lessons from Thailand. Curr Opin Gastroenterol 2008;24:349-56.   Back to cited text no. 1
Wiwanitkit V. Cholangiocarcinomaand opisthorchiasis in Northeast Thailand: raw fish intake may not be the sole cause. Rev Soc Bras Med Trop 2015;48:365.   Back to cited text no. 2
Leelayoova S, Siripattanapipong S, Naaglor T, Taamasri P, Mungthin M. Prevalence of intestinal parasitic infections in military personnel and military dogs, Thailand. J Med Assoc Thai 2009;92:(Suppl 1) S53-9.  Back to cited text no. 3
Aunpromma S, Tangkawattana P, Papirom P, Kanjampa P, Tesana S, Sripa B. High prevalence of Opisthorchis viverrini infection in reservoir hosts in four districts of Khon Kaen Province, an opisthorchiasis endemic area of Thailand. Parasitol Int 2012;61:60-4.  Back to cited text no. 4

Correspondence Address:
Viroj Wiwanitkit
Wiwanitkit House, Bangkhae, Bangkok
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1755-6783.196640

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