南水北调中线引江济汉水利工程对血吸虫病流行的影响趋势 Ⅱ工程区疫情的逐年变化

Potential impact of South-North Water-Diversion Middle-Line Project on transmission of schistosomiasis in Hubei Province Ⅱ Changes of endemic situation in engineering areas year by year

目的了解南水北调中线引江济汉水利工程区对血吸虫病疫情动态变化,为制定防治对策提供依据。方法制定统一的调查方案,调查3个县(市、区)工程区渠道两边1000m范围内的疫情。结果2006年工程区域内现有钉螺面积213.23hm2,慢性血吸虫病人270例,新发急性血吸虫感染2例和1处新发现螺区。结论工程区钉螺面积逐年增大,但钉螺密度逐年降低。工程区存在血吸虫病流行的潜在威胁。

Objective To understand the dynamic of schistosomiasis endemic in the engineering areas of South-North Water-Diversion Middle-Line Project. Methods The schistosomiasis endemic in the engineering areas of 3 counties （cities） was investigated according to the unified research protocol. Results There were 213.23 hm^2 snail areas, 270 chronic schistosomiasis patients and 2 acute cases, and a new snail habitat. Conclusion In the engineering area, the snail areas are increasing year by year but the density of snails is reducing, and there is a potential risk for schistosomiasis transmission.