Research on the use of surface active substances in the protection against Schistosoma cercariae.

Cercariae immobilisation and Schistosoma mansoni adult recovery tests in the mouse show that tensides can greatly reduce the infectivity of cercariae. In the case of two amphoteric products, Laurylbetain and Laurylamidopropylbetain, this action is obtained with very low (0.1-5 ppm) concentrations.