Abstract:

【Abstract】 Objective  To analyze the endemic situation of schistosomiasis in Tongling County in order to provide scientific evidences with schistosomias control program in the coming the “13th Five-year Plan”. Methods The data were objectively collected and statistically summarized regarding the control achievement in schistosomiasis, population and domestic animal infection status and presence of Oncomelania hupensis in Tongling county during 2004 and 2013. Results Prevalence of schistosomiasis generally tended to decline since the program started in 2004. By the end of 2013, the area infected with Oncomelania hupensis was 2 476.17hm2, and environment with snail presence was 182, which was decreased by 23.05% and 24.48%, respectively, compared to those in 2004 throughout the county. Etiological tests revealed that the positive population was free in 2012 from a rate of 7.55% in 2004, and positive domestic animals were absent in 2011 from 8.5% infection in 2004. Infection control of schistosomiasis reached the criteria in 2007. No acute case of schistosomiasis occurred in 2010, and infectious snails were free in 2011. By 2012, control of the schistosomiasis transmission was overall up to the criteria across the county. Conclusion By comprehensive control of the infection sources, prevalence of schistosomiasis has effectively been brought down to the lowest level in history in Tongling County after 2004. However, there still exists a large scale of snail areas in marshland, indicating that the endemic situation is likely to rebound, which still needs close surveillance and risk assessment in following tasks.

Key words: Schistosomiasis, Oncomelania hupensis, Analysis, Tongling County