Objective: To understand the dynamics of schistosomiasis japonica in a national surveillance site in Jiangling County, Hubei Province, China, so as to provide the evidence for formulating the intervention strategy of schistosomiasis control in the whole county.
Methods: The surveillance was performed in the surveillance village according to The National Surveillance Scheme of Schistosomiasis japonica, and the results were analyzed statistically from 2005 to 2011.
Results: The schistosome infection rates in residents and cattle decreased from 1.83% and 11.67% in 2005 to 0.91% and 0 in 2011, respectively. The density of living Oncomelania hupensis snails, the density of infected snails, and the infection rate of snails decreased from 4.02/0.1 m2, 0.014 5/0.1 m2, and 0.36% in 2005 to 0.70/0.1 m2, 0.000 3/0.1 m2, and 0.04% in 2011, respectively.
Conclusions: The transmission of schistosomiasis in the surveillance site shows a gradually decreasing trend year by year, but the prevalence is still not stable. Therefore, the comprehensive interventions with the main effort for the infectious source control still need to be strengthened.