Table 1. The number of endemic villages, the at-risk population, and the number of schistosomiasis cases over time around Dongting Lake.

Year	Number of Endemic Villages	At-Risk Human Population	Estimated Number of Human Schistosomiasis Cases
1990	2,211	3,081,020	275,746
2000	2,350	3,439,088	205,745
2010	1,735	2,663,458	94,811

1990–2000: Control of schistosomiasis involved human treatment and snail elimination.

2000–2010: Control of schistosomiasis involved annual mass treatment of humans and bovines, health education, and environmental modification.