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2000年夏季,我地区鱼塘发生大面积暴发性出血病,来势凶猛,危害的种类多,流行地区广、发病季节长、死亡率高达100％,给养殖
In the summer of 2000, large-scale outbreaks of hemorrhagic disease occurred in fishponds in my area, with ferocious and harmful species, wide epidemic areas, long onset season and death rate as high as 100%