<unk>  is an infection caused by a roundworm (nematode), Strongyloides stercoralis. Transmission occurs predominantly in tropical and subtropical areas but can also be found in countries with temperate environments including the southeastern U.S. Infection is contracted via direct contact with contaminated soil during agricultural, domestic, and recreational activities. S stercoralis in humans usually produces an asymptomatic chronic infection of the gastrointestinal tract that can remain undetected for several decades. Usually there are no unique clinical symptoms to suggest infection, although abdominal bloating and eosinophilia are common in many infected patients. In some patients a disseminated or hyperinfection syndrome can develop with the dissemination of larvae to extra-intestinal organs, and that can result in mortality rates exceeding 90%. Risk factors and predisposing conditions include immunosuppressive therapies with corticosteroids and other medications, HTLV-1 infection, organ transplantation, immune reconstitution syndrome, hematologic malignancies (lymphoma), tuberculosis, and malnutrition. Diagnosis is generally made by the detection of larvae in the stool. Ivermectin, thiabendazole, and albendazole are the most effective medicines for treating the infection. Excellent recovery after treatment should be expected in immunocompetent patients.
Strongyloidiasis
Enterobiasis
Opisthorchiasis
Helminthiasis
Clonorchiasis
Necatoriasis
Isosporiasis
Cyclosporiasis