鄱阳湖区日本血吸虫动物宿主及血吸虫病的传播

本从鄱阳湖区洲滩野粪污染指数、实验流行病学研究及耕牛放牧、尾蚴分析和钉螺感染的季节性变化等方面阐明了鄱阳湖区日本血吸虫的主要动物宿主为耕牛，病牛(尤其是3岁以下耕牛)为当地血吸虫病的主要传染源；分析了鄱阳湖区血吸虫传播特征，每年春季(4～6月)，为血吸虫在终宿主(人和牛)和中间宿主相互传播的“交汇点”；涨水季节(7～8月)为血吸虫非易感季节，秋季(9～10月)为人畜感染的高峰，冬季(11月～翌年3月)，为洲滩枯水期，血吸虫传播休止。终宿主和中间宿主的易感区域均为村旁的洲滩。

Animal Host of Schistosoma japonicum and Transmission of Schistosomiasis in Poyang Lake Region

The article clarified, according to the recent research results which have been done in Poyang Lake region of Jiangxi province, bovines are the most important animal hosts of Schistosoma japonicum and infected bovines are main infectious sources of Schistosomiasis in Poyang Lake region. Spring (March to June) is the " cross transmission stage" between definitive host and intermediate host, that is, spring is not only the susceptible season of infection for livestock and human, but also is the susceptible season of infection for snails. In flood season (July to August), the transmission of Schistosomiasis between livestock and snails belong to " low level phase" . Autumn (September to Octber) is the second seasonal peak of cercariae and is the susceptible season of infection for livestock and human. Winter(November to Feburary in next year) is the non- susceptible season of infection. Most of the susceptible zones of infection for livestock, human and snails are the marshlands near the endemic villages.