Abstract: Objective To analyze the epidemic dynamics of schistosomiasis transmission from 2002 to 2019 in Lianxi District,Jiujiang City,so as to provide reference for updating prevention strategies in areas with schistosomiasis interruption. Methods The data on schistosomiasis prevention and control in Lianxi District,Jiujiang City,were collected from 2002 to 2019,and analyzed concerning the changes of schistosomiasis infection in population,livestock and snail prevalence. Results From 2012 to 2019,no local schistosomiasis patients or sick livestock were found for the 8 consecutive years. The corrected infection rate was decreased from 0. 43% and 4. 20% to zero,respectively for population and livestock. Between 2002 and 2019,the areas with snails were ascended in fluctuating fashion,and peaked in 2016,yet no infected snails were found in 10 consecutive years(2010—2019). Population corrected infection rate was positively correlated with the number of cattle in stock,and negatively with the funding of schistosomiasis prevention and control. Conclusion Schistosomiasis epidemic situation in Lianxi District was steadily declined from 2002 to 2019. In the absence of fundamental changes in the snail breeding environments,current control strategies on schistosomiasis have achieved a lot based on human and livestock chemotherapy,supplemented by snail control in susceptible areas and health education. However,challenges to consolidation and elimination of the epidemic still exist in view of reduction of related project funding.

Key words: Schistosomiasis, Oncomelania hupensis, Epidemic analysis