Les mollusques dans la transmission des helminthoses humaines et vétérinaires

Fresh water gasteropods are intermediate hosts in the life cycle of numerous digeneans of medical and veterinary relevance, and of a few Protostrongylidae helminths. These molluscs harbour the larval development of parasites and their transmission to the final host, either directly or via another aquatic host, whether fish or crustacean. The behaviour of these molluscs plays a crucial role in the maintenance of schistosomiasis or distomatosis foci, knowing that the majority of these helminthiases are cosmopolitan zoonoses. Most of these parasitic diseases are cosmopolitan zoonoses. Although the specificity of the parasite towards its molluscan host is often high, incomplete larval development may occur in many molluscan species without transmission to mammals.