Prevalence of Gnathostoma spinigerum Infection in Wild and Cultured Swamp Eels in Vietnam

  title={Prevalence of Gnathostoma spinigerum Infection in Wild and Cultured Swamp Eels in Vietnam},
  author={Tran Phu Manh Sieu and Tran Thi Ngoc Dung and Nguyen Thi Phuong Nga and Tran Vinh Hien and Anders Dalsgaard and Jitra Waikagul and Kenneth Darwin Murrell},
  booktitle={Journal of Parasitology},
Abstract Human infections with Gnathostoma spinigerum frequently occur in southern Vietnam. Previous investigations have implicated infected swamp eels (Monopterus albus) as an important source of infection to humans. Because aquaculture of M. alba is an important farming activity in Vietnam, a 2-yr study was carried out to assess the relative importance of farmed and wild eels as potential sources of gnathostome infections in humans. Eels sold for public consumption in markets in southern… 

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Rickettsiae, protozoa, and opisthokonta/metazoa.



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Gnathostoma infective stage larvae in swamp eels (Fluta alba) at a metropolitan market in Bangkok, Thailand.

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The viscera of swamp eels were obtained from a local market in Bangkok twice a month from June 1996 to May 1997 to suggest that the level of infection abruptly decreases soon after the completion of the rainy season, starts to rise when the rain has come, and reaches its peak when the amount of rainfall is highest.

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Observations indicate that the larvae are different from those of reported species of Gnathostoma from Thailand including G. spinigerum, suggesting a possibility of the advanced third-stage larvae of G. malaysiae.

Gnathostoma procyonis From South Georgia and North Florida Raccoons

From 2004 to 2006, 511 raccoons collected by the United States Department of Agriculture Wildlife Services as part of a study to evaluate the effects of mesomammalian predator removal on

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The results show that such serious trematode zoonoses as clonorchiasis, opisthorch disease, paragonimiasis and fascioliasis are common in many regions of Vietnam, and, in the case of fasCIoliasis and paragonsimiasis, are increasing.

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The semi-structured interviews suggest that a Western model of behavioral change offered a useful research construct, and residents were eager to vaccinate their children despite variable perception of disease severity, while they were less consistent in their interest in vaccinating adults.