Streptococcosis is one of the most serious diseases afflicting yellowtail cultivated in Japan.
Enterococcus seriolicida was originally described as the pathogen which causes this disease, but in 1996
Enterococcus seriolicida was reported to be identical to
Lactococcus garvieae, which has been isolated from human patients suffering from endocarditis and cow with mastitis as well as from normal animals. There has been a study on the epidemiological relationship of
Lactococcus garvieae isolated from different species, but, there is still little knowledge about the ecology, pathogenicity and mode of infection of
Lactococcus garvieae.
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