Potentially zoonotic helminthiases of murid rodents from the Indo-Chinese peninsula: impact of habitat and the risk of human infection

In this study, we report the potential rodent-borne zoonotic helminths in wild-caught murid rodents from four categorized habitats-forest, nonflooded land, irrigated land, and human settlement in seven localities of Thailand, Cambodia, and Lao PDR. Out of 2478 rodent samples, 735 (29.7%) were infect...

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Published inVector borne and zoonotic diseases (Larchmont, N.Y.) Vol. 15; no. 1; p. 73
Main Authors Chaisiri, Kittipong, Siribat, Praphaiphat, Ribas, Alexis, Morand, Serge
Format Journal Article
LanguageEnglish
Published United States 01.01.2015
Subjects
Animals
Cambodia - epidemiology
Disease Vectors
Ecosystem
Female
Helminthiasis, Animal - epidemiology
Helminths - isolation & purification
Humans
Laos - epidemiology
Male
Muridae - parasitology
Prevalence
Rodent Diseases - parasitology
Seasons
Thailand - epidemiology
Zoonoses
Cambodia
Thailand
Laos
Helminth
Lao PDR
Cambodia
Habitat
Zoonosis
Rodent
Thailand
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Summary:In this study, we report the potential rodent-borne zoonotic helminths in wild-caught murid rodents from four categorized habitats-forest, nonflooded land, irrigated land, and human settlement in seven localities of Thailand, Cambodia, and Lao PDR. Out of 2478 rodent samples, 735 (29.7%) were infected by at least one of the following zoonotic helminth species: Echinostoma malayanum, Echinostoma ilocanum, Plagiorchis muris, Raillietina spp., Hymenolepis diminuta, Hymenolepis nana, Cyclodontostomum purivisi, and Moniliformis moniliformis. Raillietina spp. showed the highest prevalence (13.8%), followed by H. diminuta (8.6%), H. nana (6.7%), and C. purvisi (1.0%). Habitat affected the intensity of helminth infection in murid rodent hosts. Specific habitats favoring each zoonotic helminth species are discussed in relation to the risk of human infection. Season and host maturity influenced intensity of total zoonotic helminths, but there was no influence of host gender. However, in terms of individual helminth species, female rodents were more infected by E. malayanum, E. ilocanum, and C. purvisi than males. Among the rodent species, Rattus tanezumi seems to play the most important role as a reservoir by hosting seven zoonotic heminth species. This rat is ubiquitously found in all types of the habitats, suggesting that it can act as an important bridge species, carrying parasites across different habitats.
ISSN:1557-7759
DOI:10.1089/vbz.2014.1619