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鱼类细菌性传染病是目前危害渔业生产最严重的疾病,据统计分析,鱼类细菌性传染病已占整个鱼类疾病的40%～50%。细菌性疾病可分为两种情况:一是急性细菌性传染病,此型发病急,病程短,死亡率高,而且多以败血症出现,有的已呈暴发性趋势,甚至发生大规模的流行,导致全池(箱)覆灭;另一种是慢性溃烂病,此型流行范围不广,多以慢性出现,主要以体表溃烂、损伤为主,一般不会造成大批养殖鱼类的死亡,但也会经常发生小批量死亡,即使未死,由于体表溃烂,这些鱼也丧失了商品经济价值。
Bacterial infectious diseases of fish are currently the most serious diseases that endanger fishery production. According to statistical analysis, bacterial infectious diseases of fish account for 40% -50% of the total fish diseases. Bacterial disease can be divided into two situations: First, acute bacterial infections, this type of acute onset, short duration, high mortality, and more sepsis, and some have been an outbreak of the trend, or even a large-scale epidemic , Resulting in the entire pool (box) vanished; the other is chronic ulcer disease, this type of epidemic is not widespread, mostly chronic, mainly in the body ulceration, damage-based, generally do not cause a large number of farmed fish deaths, However, small-batch deaths also occur frequently, and even if not dead, these fish lose the economic value of the commodity due to ulceration of the surface.