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在皖江江滩血吸虫病疫区开展了疫情状况和连续4年的流行因素调查。研究结果显示,该地区为本省血吸虫病流行的主要地区;近5年由于涨滩的原因,新增滩地有螺面积显著,以江洲滩为甚;传染源的种类较多,在传播中的地位依次为牛、猪、人等;人群接触疫水以生活方式为主,其频次和强度分别以农民和渔民最高;感染性钉螺分布与植被种类及家畜活动频度、野粪污染程度呈正相关,并呈负二项分布;疫区形成与滩地崩涨、变迁密切相关;皖江水位及降雨量是影响流行的重要因素。
Outbreak situation of schistosomiasis in Wanjiang River beach and epidemiological investigation for 4 consecutive years were carried out. The results show that the area is the main area of schistosomiasis endemic in our province. In the past five years, the area of newly added conchosphere was significantly increased due to the rising of the beach, especially to Jiangzhou Beach. There were more types of infectious sources and the status of spreading Followed by cattle, pigs, and others. The frequency of population exposure and the intensity were the highest among peasants and fishermen respectively. The distribution of infectious snails was positively correlated with the types of vegetation, the frequency of livestock activities and the degree of stool pollution. And negatively distributed. The formation of epidemic area is closely related to the collapse and change of the beachland. The water level and rainfall in the Wanjiang River are the important factors affecting the epidemic.