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''Cyprinid herpesvirus 3'' (also CyHV-3, koi herpes virus, or KHV), is a species of virus causing a viral disease that is very contagious to the common carp ''Cyrpinus carpio''. It is most commonly found in ornamental koi, which are often used in outdoor ponds or as feeder stock. The first case of KHV was reported in 1998, but not confirmed until later in 1999. KHV is a DNA-based virus. After discovery, it was identified as a strain of herpesvirus. Like other strains, KHV stays with the infected fish for the duration of their lives, making the recovered and exposed fish potential carriers of the virus. Koi fish infected with KHV may die within the first 24-48 hours of exposure. KHV is listed as a nonexotic disease of the EU, so is watched closely by the European Community Reference Laboratory for Fish Diseases. Symptoms of KHV include: * Gill mottling * Red and white patches appearing on gills * Bleeding gills * Sunken eyes * Pale patches * Blisters ==External links== * (Invading Species.com ) Ontario Ministry of Natural Resources and the Ontario Federation of Anglers and Hunters * (Koi Herpes Virus (KHV) Disease. Institute of Food and Agricultural Sciences Fact Sheet VM-149, University of Florida. ) * (K.H.V. Koi Herpes Virus. National Fish Pharmaceuticals ) * (European Community Reference Laboratory for Fish Diseases ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Cyprinid herpesvirus 3」の詳細全文を読む スポンサード リンク
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