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近年来,上海、浙江、广东、湖南等省市广泛流行一种新的急性传染病,危害多种淡水养殖鱼类。该病来势猛,发病面积广,死亡率高,造成的损失惨重。目前,该病已蔓延全国各主要养鱼区。我省于1990年5月初在长沙市郊区首先发现,并迅速波及衡阳、郴州、益阳、常德、岳阳等地市,严重威胁渔业生产。为了全面了解该病的发病规律,查明病因,尽快控制该病的发生和蔓延。我们于1990年6月—1991年9月,对我省主要养鱼区暴发性传染病的流行病学进行了初步调查。现将调查情况报告如下:
In recent years, Shanghai, Zhejiang, Guangdong and Hunan provinces and cities have widely prevalent with a new type of acute infectious diseases that endanger many freshwater cultured fish. The disease is fierce, the incidence of a wide area, high mortality, causing heavy losses. At present, the disease has spread all over the country’s major fish farming areas. The province first discovered in the suburbs of Changsha City in early May 1990 and quickly spread to other cities such as Hengyang, Chenzhou, Yiyang, Changde and Yueyang, threatening fishery production seriously. In order to fully understand the incidence of the disease, identify the cause, as soon as possible to control the occurrence and spread of the disease. We conducted a preliminary investigation on the epidemiology of outbreaks of infectious diseases in the main fish farming areas in our province from June 1990 to September 1991. The investigation report is as follows: