Abstract:

Objective To understand the endemic trends, impact factors and characteristics of schistosomiasis, and provide reference for making out control strategies. Methods According to the protocol of National Schistosomiasis Surveillance Programme, the indexes on the prevalence of schistosomiasis at Guifan Village, which was one of the national surveillance sites, were selected and analyzed.Results After the implement of the comprehensive control strategies which emphasis on infectious source control, from 2005 to 2010, the infection rate of schistosomiasis in residents of the village reduced from 6.38% to 2.37%, and there was only one acute schistosomiasis case occurred in 2005 for the six years. The density of infected snail reduced from 0.0082/0.1m² in 2005 to 0.00064/0.1m² in 2009, and no infected snails were found in 2010. Conclusion In severe endemic areas of schistosomiasis, after the implement of comprehensive control strategies which emphasis on infectious source control, the disease could be effectively controlled in a short term. Surveillance and management on mobile population should be strenghtened to reduce the prevalence of schistosomiasis furtherly. Surveillance on other infectious sources, such as wild animals, pigs, cats and dogs should also be strenghteded to consolidate the effect of infectious source control measures and control the transmission of schistosomiasis.

Key words: Schistosomiasis, Enidemic surveillance, Infectious source control