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Strongyloides stercoralis, an intestinal nematode living in soil, usually is acquired through the skin but can be transmitted human-to-human by the fecal–oral route. Clinical manifestations run the gamut from asymptomatic to pruritic rash, respiratory irritation, and diarrhea and vomiting.
In June 2015, a local Arizona public health agency was notified of a suspected case of strongyloidiasis in a resident of a long-term–care facility for the developmentally disabled. Signs included anemia and eosinophilia, and infection was confirmed by serology using a commercial enzyme-linked immunosorbent assay (ELISA) followed by ELISA done at the CDC. During the next 5 months, serologic screening of 55% of employees and all 91 of the residents yielded t…