德安县血吸虫病传播阻断后5年疫情监测

Surveillance of schistosomiasis in De'an County 5 years after blocking schistosomiasis transmission

目的观察德安县2004年血吸虫病传播阻断后5年疫情变化。方法应用机械抽样结合环境抽样调查历史有螺环境和其他可疑环境钉螺;对常住居民、流动人群和疑似血吸虫病人,以及当地耕牛和流动家畜先行IHA法筛查,阳性者分别应用Kato-Katz法和塑料杯顶管孵化法作病原学检查。结果2005~2009年德安县历史有螺环境和可疑环境均未查获活螺,常住和流动人群以及家畜均未检出当地血吸虫感染者。结论德安县血吸虫病传播阻断后5年未见钉螺再现和当地人畜血吸虫感染,但仍应继续加强疫情监测工作。

Objective To observe changes in outbreaks of schistosomiasis in De′an County 5 years after blocking of the transmission of the disease in 2004.Methods Mechanical sampling combined with environmental sampling was implemented to investigate historical areas with snails and other areas suspected of having snails.IHA was used to screen residents,migrants,other individuals suspected of having schistosomiasis,and local cattle and migrating livestock.Positive results were then checked etiologically using the Kato-Katz method for humans and the hatching method for animals.Results From 2005-2009,living snails were not found in areas where snails historically existed and areas suspected of having snails in De′an County.There were no cases of schistosomiasis in the resident and migrant human populations or in livestock.Conclusion In the 5 years after blocking of the transmission of schistosomiasis in De＇an County,no snails or residents and animals were found to be infected with schistosomes.However,surveillance of schistosomiasis outbreaks should continue to be enhanced.