Abstract
SummaryAn investigation of the prevalence of pinworm infection among 300 hospitalized children and 200 children in a child shelter was conducted during the years 1957 and 1958.The rate of infection among children of Puerto Rican birth or ancestry was 4.2%; among Negroes 7.5% and among Whites 17.3%. The differences between the rates of infection among White and Negro children and among White and Puerto Rican children were highly significant. The overall prevalence was 9%. This rate of infection is lower than that found in most reports of enterobiasis in this country. No explanation exists for this difference at present.
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