Abstract:

【Abstract】 Objective   To analyze the endemic situation and summarize the experience of schistosomiasis control in Zongyang County from 2006 to 2014, in order to provide evidence for planning appropriate prevention and control measures in the future. Methods  The annual statistical reports and other relative databases on schistosomiasis control were collected in Zongyang County from 2006 to 2014, and analyzed in compliance with yearly human and farm cattle infection with shistosomiasis as well as changes of snail status. Results  Positive rate for pathogen was 4.20% in 2006, which was reduced to below 1%. No infections were detected in between 2013 and 2014, and no acute schistosomiasis occurred since 2011. The infection rate for farm cattle was decreased to 0.95%~3.98% from 9.34% in 2006, and the farm cattle were completely out of service in 28 endemic villages by the end of 2012. Totally, the resurgent and rebounding areas of snails(mainly found in the marshland) were 228.32hm2 and 17.86hm2, respectively, between 2006 and 2014. Snail elimination covered a net area of 123.87hm2, which accounted for 5.97% of the area with snail prevalence in 2005. The average density of live snail habitats varied from 0.417 3 to 1.182 1 snail /0.11m2, and the density of live snails remained no statistical difference in different environments. Infected snails tended to decline from 2006 to 2011, and were not detected in 2013 and 2014. Conclusion  Although endemic schistosomiasis in Zongyang County was effectively controlled after comprehensive management of the infectious sources, yet endemic snails still remain tense. Therefore, it is necessary to strengthen management of the snail sources in following tasks in order to consolidate the present efforts.

Key words: Schistosomiasis, Endemic situation, Zongyang County