Other nematode infections

Historically, the intestinal nematodes Ascaris lumbricoides, Trichuris trichiura, and hookworm have been endemic in Canada but they have now disappeared and are only seen as imported infections in travellers and immigrants. The pinworm, Enterobius vermicularis, remains endemic but its prevalence has not been systematically studied in Canada or Alaska. Chronic strongyloidiasis is seen in immigrants and WW II prisoners of war from Asia. Deaths are seen intermittently as a result of Strongyloides stercoralis hyperinfection in the immunocompromised. The chronic sequelae of filariasis (chyluria, lymphedema) are a problem in a small group of immigrants.

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