Schistosomiasis in China: acute infections during 2005-2008
Schistosomiasis in China: acute infections during 2005-2008
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DOI：
10.3760/cma.j.issn.0366-6999.2009.09.002
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发表时间：
2009-05-05
影响因子：
6.1
通讯作者：
Zhou Xiao-nong
中科院分区：
文献类型：
--
作者：
Li Shi-zhu;Luz, Acosta;Zhou Xiao-nong
背景：近50年来，中国的血吸虫病防治工作取得了显著进展。然而，现有数据表明，在1992年至2001年实施世界银行贷款项目后不久，血吸虫病再次出现。自2005年以来，实施了国家控制方案，其中修订了利用综合措施控制血吸虫病的战略。方法根据2005~2008年全国传染病网络报告系统每年报告的急性日本血吸虫病病例数进行回顾性分析。结果2005、2006、2007、2008年全国共报告急性日本血吸虫感染病例564例、207例、83例、57例，年均下降46.35%。2005年报告了6起日本血吸虫急性感染暴发，但2006至2008年期间没有一起。所有报告的急性病例主要来自湖区，并在一年的第27至43周的高危时期感染。感染病例以学生(44.87%)、农民(31.51%)和渔民(7.79%)为主，主要通过游泳(41.49%)和生产活动(40.25%)接触水感染。随着时间的推移，人口流动频繁，人口流动频繁，输入性病例在所有急性病例中所占比例增加。结论国家血吸虫病防治规划与修订后的控制策略相脱节，已得到有效实施。然而，居住在湖区的学生、农民和渔民感染的风险仍然很大。因此，重要的是在传播高危地区或湖泊地区的危险人群中加强控制措施。中华医学杂志2009；122(9)：1009-1014
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. japonicum 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 the high risk areas of transmission, or the lake regions. Chin Med J 2009; 122(9):1009-1014