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在五十和六十年代,江苏省江湖滩钉螺的分布面广量大,感染性钉螺也多,对周围和下游地区造成严重的钉螺扩散,是血吸虫病急性感染的主要疫源地,对附近平原水网型血吸虫病流行区的形成和加重流行程度有着密切关系。经过20多年的防治,江湖滩螺情已显著下降。但近两年由于长江洲滩漫水,钉螺扩散,使江滩钉螺较七十年代末有所回升,江滩有螺面积的相对比例占全省现有钉螺面积的88％,在当前江苏省血吸虫病的流行上占十分重要的地位,必须予以重视。
In the 1950s and 1960s, the distribution of snails in rivers and lakes in Jiangsu Province was extensive and the number of infectious snails was large, causing serious snail spread to surrounding and downstream areas. It was the main source of acute schistosomiasis infection. The formation of epidemic area of plain water net schistosomiasis is closely related to the prevalence of aggravating epidemic. After more than 20 years of prevention and treatment, rivers and lakes beach snails have dropped significantly. However, in recent two years, due to the flood of Changjiang Island Beach and the spread of snails, the relative value of snails in the beach increased 88% compared with that in the province at present. The current Jiangsu Province The prevalence of schistosomiasis occupies a very important position, we must pay attention to it.