Figure 1.

Positivity rates for anti-Strongyloides sp. antibodies among individuals residing in long-term institutions. After obtaining whole blood from elderly individuals living in long-term residences, samples were centrifuged to obtain the serum, and ELISA was performed. Plate sensitization was performed with the use of a total and/or partial extract of Strongyloides venezuelensis. Frequencies (positive, negative, and undetermined) were compared between the total and partial extract. No significant differences, chi-square test (p > 0.05).