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目的了解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,对工程区荆州、沙洋和潜江3个县(市、区)开工前的疫情进行5年纵向观察,为制定防治对策提供依据。方法制定统一的调查方案,对工程区进行钉螺和病情调查。结果5年来工程区域内现有钉螺面积徘徊在39.54～58.42hm2之间。慢性血吸虫病人感染率在2.98%～6.53%之间。结论工程区上游水系存在着钉螺向工程渠扩散的威胁。荆州区工程渠道开口处的钉螺面积、钉螺密度逐年减少,血吸虫病人感染率呈逐年下降的趋势。引江济汉工程区存在着血吸虫病流行的潜在风险。
Objective To understand the trend of influencing the epidemic of schistosomiasis caused by water diversion from the Middle Route of South-to-North Water Diversion Project. The epidemic situation in the three counties (cities and districts) of Jingzhou, Shayang and Qianjiang in the project area was observed longitudinally for 5 years, . Methods A unified investigation plan was formulated to conduct snail and disease investigation in the project area. Results The existing snail area in the project area hovered between 39.54 and 58.42hm2 within 5 years. Chronic schistosomiasis infection rates between 2.98% ~ 6.53%. Conclusion The upper reaches of the project area threaten the snail spread to the engineering canal. Jingzhou District project openings open snail snail area, snail density decreased year by year, schistosomiasis infection rates showed a downward trend year by year. There is a potential risk of schistosomiasis epidemic in the Jijian-Han engineering area.