Effects of Lead on Workers Living in Areas with Highly Endemic Intestinal Helminthiasis

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Abstract
The degree of Pb exposure among the workers [in Brazil] and the possible influence of the high intestinal parasitosis index [Ascaris lumbricoides, Necator americanus, Trichuris trichiura, S. mansoni] on the clinical picture (signs and symptoms) were studied. The clinical picture of the prevailing parasitosis is similar to the picture presented by Pb intoxication. If physiopathological synergistic action does not exist, then at least a masking effect of the signs and symptoms is present. In terms of occupational geographical health studies the findings remind us of the possibility of masking the signs and symptoms of an occupational disease by an endemic parasitosis or vice versa, an important practical consideration for all health officials working in these areas.

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