Abstract:

Objective To understand the dynamics and status of Schistosoma japonicum infection in a national surveillance site in Anxiang county for scientific evidence to plan local strategies in prevention and control of the schistosomiasis. Methods The surveillance was performed in annual fashion as the requirements specified in the National Surveillance Scheme of Schistosomiasis in China, regarding the infection status in animals and population, snail prevalence status and other factors associated with the infections in local areas. The data were collected from 2005 to 2016, and statistically analyzed. Results The schistosome infection rate was reduced to zero in 2016 from 1.06% in population and 5.45% in livestock in 2005, and the areas with infected snails and infection rate of snails were both decreased to zero in 2016 from 101 320 hm2 and 1.08% in 2005. Conclusion Schistosomiasis tends to annually decrease in Anxiang county. The following control strategies should be based on comprehensive interventions prioritized by infection source control for the final transmission interruption in local areas. 

Key words: Schistosomiasis, Surveillance site, Endemic situation, Anxiang county