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开化县是典型的山丘型血吸虫病疫区,也是浙西山区血吸虫病流行时间最早、最严重的地区。该县钉螺沿境内池淮溪、马金溪、龙山溪、马尪溪四条主要溪流分布,并在各溪流中形成自上而下由点状到线状的扩散趋势。开化县的血吸虫病在太平天国战争以后开始大规模的流行。移民在该县历史上不仅是血吸虫病的受害者,同时也为血吸虫病的流行提供了新宿主,造就了该县长达百余年的血吸虫病流行史。与此前自发、零散的移民活动相比,20世纪50、60年代由政府组织的新安江水库移民大量感染急性血吸虫病是开化县历史上血吸虫病与移民关系的一次集中体现。
Kaihua County is a typical hill-type schistosomiasis epidemic area, but also the western Zhejiang mountain schistosomiasis prevalence of the earliest and most serious areas. The county snail along the territory of the pool Huai River, Makin Creek, Longshan Creek, Ma River Creek four major streams, and in the formation of streams from top to bottom from the point to linear diffusion. Schistosomiasis in Kaihua County started a large-scale epidemic after the Taiping War. Immigrants in the history of the county not only victims of schistosomiasis, but also for the epidemic of schistosomiasis provides a new host, created the county’s history of more than 100 years of schistosomiasis. Compared with the spontaneous and scattered immigrants, the massive infection of acute schistosomiasis by Xin’anjiang Reservoir resettled by the government in the 1950s and 1960s was a concentrated manifestation of the relationship between schistosomiasis and immigration in Kaihua County.