[Application of space-time scan statistics in early warning of distribution of schistosome infected Oncomelania hupensis snails].

Objective: To explore the application of space-time scan statistics in the early warning of distribution of schistosome infected Oncomelania hupensis snails.

Methods: The data of distribution of infected snails in Anhui Province from 2006 to 2012 were collected, and a spatial database was established by ArcGIS 9.3. The prospective spatial-temporal cluster analysis was done by SaTscan 9.1.1 at the village level.

Results: Four space-time clusters, which were distributed over the Yangtze River and its branch rivers, were detected.

Conclusion: The space-time scan statistics could detect the distribution of infected snails early, and the space-time clusters found were the key and difficult points of schistosomiasis control in Anhui Province.