[Isolation of a pathogenic rhabdovirus of brown trout (Salmo trutta L., 1766)].

A Rhabdovirus pathogenic both for Rainbow and Brown Trout has been isolated from Brown Trout suffering heavy mortalities associated with muscular haemorrages and necrotic lesions of kidney and spleen. According to seroneutralization tests and host range, this virus appears to be different from the other known salmonids rhabdoviruses. Upon the basis of its in vitro gross characteristics, it is identical to Viral Haemorragic Septicemia Virus (VHS), F1 serotype, but differs from Infectious Hematopoïetic Necrosis and VHS type II viruses.