中文摘要：

背景重要进步在控制发生在过去的 50 年血吸虫病在中国的装饰用的梨树。然而，可得到的数据建议了那血吸虫病立即在从 1992 ～ 2001 被进行的世界银行贷款工程以后有 re-emerged。有到控制的修订策略的国家控制程序由使用综合措施血吸虫病自从 2005，被实现了。在这研究，我们试图评估国家程序的效果在上血吸虫病从 2005 ～ 2008 .Methods A 的控制回顾的学习被执行与血吸虫 japonicum 分析急性感染的流行模式(S。japonicum ) ，从 564， 207， 83 和 57 个尖锐案例的 2005 ～ 2008 .Results A 总数基于每年从基于万维网的国家传染性的疾病收集的尖锐案例的数字报导系统与 S 感染了。分别地， japonicum 与 46.35% 的平均年度减小率在 2005， 2006， 2007 和 2008 全国被报导在期间持续四年。有 S 的急性感染的六爆发。japonicum 在 2005 被报导但是没有在 2006 ～ 2008 的时期。被报导的所有尖锐案例主要来自湖区域并且变得从第 27 在更高的风险时期期间感染了到第 43 星期一年。大多数这些案例是学生(44.87%) ，农民(31.51%) 和走水路得了感染的渔民(7.79%) 主要通过游泳联系(41.49%) 并且生产活动(40.25%) 。与时间，在所有尖锐案例之中的进口案例的比例由于与更活动的 population.Conclusions 发生了的人的更多的经常的运动增加了国家控制程序在上血吸虫病有修订控制策略的 aliened 有效地被带进效果。然而，仍然有在在湖区域的学生，农民和渔民生活之中的感染的重要风险。因此，在传播，或湖区域的高风险区域在风险人口之中加强控制措施是重要的。

英文摘要：

Background Significant progress has taken place over the past 50 years in the control of schistosomiasis japonica in China. However, the available data suggested that schistosomiasis has re-emerged shortly after the World Bank Loan Project which was conducted from 1992 to 2001. The national control program with a revised strategy to control schistosomiasis by using integrated measures has been implemented since 2005. In this study, we aimed to evaluate the effect of the national program on schistosomiasis control from 2005 to 2008. Methods A retrospective study was carried out to analyze the epidemic patterns of acute infections with Schistosoma japonicum （S. japonicum）, based on the number of acute cases annually collected from the web-based national communicable diseases reporting system from 2005 to 2008. Results A total of 564, 207, 83 and 57 acute cases infected with S. japonicum were reported nationwide in 2005, 2006, 2007 and 2008, respectively, with an average annual reduction rate of 46.35% during last four years. Six outbreaks of acute infection with S. japonicurn were reported in 2005 but none in the period of 2006 to 2008. All acute cases that were reported mainly came from the lake regions and became infected during the higher risk periods from the 27th to 43rd weeks of the year. Most of these cases are students （44.87%）, farmers （31.51 %） and fishermen （7.79%） who got the infection by water contact mainly through swimming （41.49%） and production activities （40.25%）. With time, the proportion of imported cases among all acute cases increased due to more frequent movement of people that has occurred with a more mobile population. Conclusions The national control program on schistosomiasis aliened with the revised control strategy has been effectively brought into effect. However, there is still a significant risk of infection among students, farmers and fishermen living in the lake regions. Therefore, it is important to strengthen control measures among risk populations in t