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Summary
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A total of 1031 cases from domestic fish farms were submitted and examined by laboratory tests, including bacterial and virus isolations as well as identifications, determined by using molecular diagnostic tests. In this report, we focus on results of the virus detection survey. Forty-nine percent (504/1,031) out of the examined fish specimens were diagnosed as viral infections, caused by eel birnavirus, eel herpesvirus and koi herpesvirus in freshwater fish, and iridovirus and nodavirus in marine water fish.
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