“…Sustained control efforts are needed to consolidate the achievements made to date and stepped-up efforts may be necessary to further reduce the number of infections and force of transmission (Bian et al, 2004;Wang et al, 2005;Fenwick and Webster, 2006;Guo et al, 2006;Liang et al, 2006). Transmission of schistosomiasis is closely related to environmental factors (Steinmann et al, 2006;Li et al, 2007;Liang et al, 2007). However, despite a number of recent studies that employed geographical information system (GIS) applications to define transmission factors that relate to control (Bergquist, 2001;Zhou et al, 2001Zhou et al, , 2002Zhou et al, , 2007bYang et al, 2005b;Chen et al, 2007), little is known about the geospatial correlation between human and animal schistosomiasis and their relative contribution to the transmission of the disease.…”