Strongyloides stercoralis is an intestinal nematode that is transmitted via transcutaneous penetration or transmammary oral ingestion. This parasite sheds non-infective larvae in the feces and can have a free-living generation as part of its lifecycle. Intestinal strongyloidiasis is a zoonotic disease capable of causing serious infections in humans. Immunocompromised individuals can develop fatal hyperinfecions. Ivermectin appears to be the only efficacious treatment.