<i>Halicephalobus gingivalis</i>(Stefanski, 1954) from a fatal infection in a horse in Ontario, Canada with comments on the validity of<i>H. deletrix</i>and a review of the genus

Anderson, Roy C.; Linder, Keith E.; Peregrine, Andrew S.

doi:10.1051/parasite/1998053255

Cited by 62 publications

(77 citation statements)

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“…[7][8][9] The genus Halicephalobus contains many species, of which only H. gingivalis has been reported to infect vertebrates and is morphologically distinct from the other seven species. 2 The other seven species are identified only as free-living forms in soil, rotting plant matter, and fresh and salt water. Unless a well-preserved specimen of adult H. gingivalis worms is available, it is not possible to delineate the species on morphology from histologic sections.…”

Section: Introductionmentioning

confidence: 99%

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Halicephalobus gingivalis: A Rare Cause of Fatal Meningoencephalomyelitis in Humans

Papadi

Boudreaux²,

Tucker³

et al. 2013

The American Society of Tropical Medicine and Hygiene

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Abstract. The genus Halicephalobus consists of eight species of free-living nematodes. Only one species (H. gingivalis) has been reported to infect vertebrates. Human infection is extremely rare, and only four cases have been reported in the literature. These nematodes seem to exhibit neurotropism, but their life cycle, mode of infection, and risk factors are poorly understood. Neurohelminthiases are not commonly recognized in the United States and when they do occur, pose great diagnostic challenges because of lack of appropriate non-invasive screening and/or confirmatory tests. We report a challenging case of meningoencephalomyelitis caused by a Halicephalobus sp., in which the patient had a rapidly deteriorating clinical course. The case did not raise any clinical suspicion of neurohelminthiases, although increased eosinophils were present in the cerebrospinal fluid. This case presents an opportunity to highlight the importance of considering parasitic infection in meningoencephalitis or meningoencephalomyelitis presenting atypically.

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Section: Introductionmentioning

confidence: 99%

“…It is capable of infecting and reproducing in vertebrates, including horses, [2][3][4][5] zebras, 6 and humans. [7][8][9] The genus Halicephalobus contains many species, of which only H. gingivalis has been reported to infect vertebrates and is morphologically distinct from the other seven species.…”

Section: Introductionmentioning

confidence: 99%

Halicephalobus gingivalis: A Rare Cause of Fatal Meningoencephalomyelitis in Humans

Papadi

Boudreaux²,

Tucker³

et al. 2013

The American Society of Tropical Medicine and Hygiene

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“…?show "fnote_aff1"$^! "content-markup(./author-grp [1]/aff|./author-grp [1]/dept-list)> A 13-week-old Thoroughbred colt developed an acute onset of ataxia, blindness, and head tremors. The foal had been normal at birth and did not exhibit signs of illness until this event.…”

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confidence: 99%

Halicephalobus Gingivalis-Associated Meningoencephalitis in a Thoroughbred Foal

et al. 2006

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Abstract. A 13-week-old Thoroughbred colt from central Kentucky was euthanized after an acute onset of ataxia, blindness, head tremors, leaning to the right, recumbency, and seizures. Microscopically, there was a verminous meningoencephalitis characterized by an eosinophilic and granulomatous inflammatory reaction primarily affecting the cerebellum. Dispersed within regions of inflammation were numerous cross and longitudinal sections of intact and degenerative small nematodes. The nematodes had dorsoflexed ovaries and ventroflexed vulvas, which are distinguishing features of Halicephalobus gingivalis. Intact nematodes, compatible with H. gingivalis, also were recovered and identified from portions of the brain that had been frozen for 5-week post-necropsy examination via tissue maceration and additional laboratory techniques.

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“…Halicephalobus gingivalis formerly known as Micronema deletrix, is a free-living nematode of soil, manure and decaying humus known to cause opportunistic infections, primarily in horses but also in humans 14 . The majority of cases in horses have been fatal and usually not diagnosed before necropsy.…”

Section: Halicephalobus Gingivalismentioning

confidence: 99%

Zoonotic tissue parasites of Australian wildlife

Spratt¹

2016

Microbiol. Aust.

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Increasing use of bushlands for recreational, commercial and scientific activities fosters movement across the urban-bushland interface. This may facilitate the transmission of parasitic diseases from wildlife to humans (zoonoses). The fashionable trend to consumption of game meats such as feral pig and crocodile, and raw fish such as sushi, sashimi and pickled herring has exacerbated the zoonotic potential of parasites of wildlife.

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Halicephalobus gingivalis(Stefanski, 1954) from a fatal infection in a horse in Ontario, Canada with comments on the validity ofH. deletrixand a review of the genus

Abstract: Summary :Halicephalobus gingivals (Stefanski, 1954), from a fatal infection in a horse in Ontario, Canada, was cultured and restudied.Although the original description given by Stefanski (1954)

Cited by 62 publications

References 1 publication

Halicephalobus gingivalis: A Rare Cause of Fatal Meningoencephalomyelitis in Humans

Halicephalobus gingivalis: A Rare Cause of Fatal Meningoencephalomyelitis in Humans

Halicephalobus Gingivalis-Associated Meningoencephalitis in a Thoroughbred Foal

Zoonotic tissue parasites of Australian wildlife

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