Trichostrongylus
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Epidemiology
- zoonotic infection of large herbivores such as cattle, sheep & goats
- found world wide
- eggs passed in the feces hatch larvae which are ingested by definitive hosts
Species that infect humans include: T. axei, T. brevis, T. colubriformis & T. orientalis.
Pathology
- human & other animals acquire infection by ingesting infectious larvae
- larvae do not penetrate the skin
- there is no migratory phase throught the lungs
- adult worms inhabit the small bowel & pass eggs in the feces
Clinical manifestations
- generally asymptomatic
- heavy infections may produce abdominal pain & diarrhea
Laboratory
- eosinophilia is generally present with heavy infestation
- diagnosis is made by recovery of eggs in feces
- resemble eggs of hookworm, but are longer & narrower
- measure 78-98 by 40-50 um
- slightly tapered at one end
More general terms
More specific terms
- Trichostrongylus axei
- Trichostrongylus brevis
- Trichostrongylus colubriformis
- Trichostrongylus orientalis
Additional terms
References
- ↑ Clinical Diagnosis & Management by Laboratory Methods, 19th edition, J.B. Henry (ed), W.B. Saunders Co., Philadelphia, PA. 1996, pg 1285