Abstract:

Objective  To understand the epidemic status and trend of schistosomiasis prevalence based on the data generated in the national surveillance sites in Jiangxi province in the last 10 years, in order to provide scientific evidences for prevention and control of the schistosomiasis across the province. Methods  Twelve surveillance sites on national level were designed throughout the province from 2005 to 2014 in compliance with the national surveillance protocol. Corresponding surveillance was annually carried out regarding the epidemic status in population, livestock and snails, and the data were collected and analyzed for understanding the schistosomiasis endemic situation and its dynamics. Results  Residents living in the lake bank and marshland areas had significantly higher infection rate than those living the hilly and mountainous regions, and fishermen aged over 20 years were most affected. Infection rate for residents and livestock as well as density of snails tended to decrease in general. Positive rates in residents by IHA and stool surveys as well as schistosomiasis were declined to 7.75%, 0.57% and 0.04% in 2014 from 32.50%, 15.47% and 5.03% in 2005, respectively. The infection rate in cattle was reduced to 0 in 2014 from 7.36% in 2005. The areas with snails, mean density of living snails and infected snails were significantly decreased from 731.27 hm2, 1.441 1/0.1m2 and 0.003 6/0.1m2 to 316.88 hm2, 0.471 3/0.1m2 and 0. Conclusion  By 2014, prevalence of schistosomiasis in population and livestock as well as areas with snails or infected snails remained lowest in history in the national surveillance sites in Jiangxi province. However, following surveillance should be weighed on fishermen, farmers and potential infectious sources .

Key words: Schistosomiasis, Epidemic situation, National surveillance sites, Jiangxi Province