[Susceptibility of Bithynia inflata mollusks from discrete populations for Opisthorchis felineus infestation from different foci of opisthorchiasis].

Experiments were conducted on crossed infection of the specific intermediate host of Opisthorchis, molluscs of Bithynia inflata from different and remote populations, with eggs of O. felineus from different nidi of the disease. The strains of the agent were found to be heterogeneous that is expressed in different degree of compatibility with the intermediate host.