Intradermal and Serologic Reactions to Antigens from Schistosoma Mansoni in Schistosome Dermatitis

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Abstract
Summary Skin tests with antigens of Schistosoma mansoni were done on 134 residents of an area where schistosome dermatitis (“swimmer's itch”) is endemic; histories were taken, and 119 blood samples were serologically tested for the diagnosis of schistosomiasis. Of the 103 with a history of schistosome dermatitis, 24.3% reacted positively to the adult antigen and 28.2% to the cercarial skin-test antigen; 22.1% of the group was positive by the fluorescent-antibody test. The complement-fixation test was negative for all persons tested. The rate of positive reactions observed in those with a recent history of schistosome dermatitis suggests that skin test and FA test results may not be reliable in areas where both the schistosomes of man and of birds infect man.

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