Abstract:

Objective  To analyze the endemic trendence on schistosomiasis from 2008 to 2012, and analyze the risk on the achivement of transmission control in Chizhou city. Methods  The data, such as annual reports, snails environmental database and surveillance reports from 2008 to 2012, were collected to analyze the trends and characteristics of schistosomiasischara.  Results  From 2008 to 2012, the infection rate of people was 0.79%, 0.60%, 0.58%, 0.52% and 0.36%, respectively. The incidence rate of acute schistosomiasis decreased from 0.38/one hundred thousand in 2008 to 0 in 2012. The number of advanced schistosomiasis cases reduced from 2274 to 1894. The infection rate of cattle was 1.70%, 1.44%, 1.16%, 1.68% and 0, respectively. The snail condition took on a downward trend in the five years, but snails still widely distributed in the endemic areas and infected snails could be found in the hilly endemic regions.  Conclusions  Since 2008, the endemic situation on schistosomiasis continued to decline in Chizhou city, but there still existed risk factors on the achivement of transmission control. We should carry out comprehensive measures with emphasis on infectious sources control and snail control.

Key words: Schistosomiasis, Endemic trend, Transmission control, Risk assessment, Chizhou city