Trichostrongylus

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Epidemiology

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

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

Additional terms

References

  1. Clinical Diagnosis & Management by Laboratory Methods, 19th edition, J.B. Henry (ed), W.B. Saunders Co., Philadelphia, PA. 1996, pg 1285