Trichostrongylidosis is an infection involving nematodes of the superfamily Trichostrongyloidea, mainly those of the genus Trichostrongylus. Infections are usually asymptomatic, but when heavy, a variety of gastrointestinal symptoms, including abdominal pain and diarrhea, can be present. Infections are initiated by the ingestion of third-stage larvae. There is no parenteral migration and the adults are usually found in the mucosa of the duodenum. Eggs pass out with the faeces, hatch in about one day and the larvae develop to the infective stage in 4 to 6 days. Human infections with Trichostrongylus spp. have been reported worldwide, and are particularly common in southern Asia. Infections respond well to anthelmintics and periodic dosing of livestock is the chief method of control.
Chapter. 2599 words.
Subjects: Public Health and Epidemiology ; Infectious Diseases ; Epidemiology
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