Serological diagnosis of schistosomiasis. 1 Demonstration and significance of bilharzial antigenaemia.

Circulating bilharzial antigens were demonstrated in 39% out of 87 bilharzial patients via the IHA and CF techniques using hyperimmune rabbit anti - S.mansoni worm serum. Correlation between the percentage of positive cases and the age, duration of infection, clinical presentation, type of bilharzial infection, chemotherapeutic effect and the intradermal test (I.