[Distribution characteristics, trend and control strategy of Oncomelania hupensis snails in Wuhu City from 1997 to 2012].

Objective: To understand the emerging and re-emerging trend of Oncomelania hupensis snails in Wuhu City from 1997 to 2012, so as to provide the evidence for developing schistosomiasis control strategy.

Methods: A retrospective survey was conducted. The emerging and re-emerging snail areas were investigated in various years, water systems, settings and countries (districts) based on the historical snail survey results.

[Establishment and application of rapid assessment system of environment with high transmission risk of schistosomiasis in marshland and lake regions II establishment and application of measures for field survey].

Objective: To establish the measures of schistosomiasis field survey and evaluate the efficacy of their application according to the content of indexes of rapid assessment system to high transmission risks in schistosomiasis endemic areas of lake regions.

Methods: In 2012, based on the analysis of Oncomelania hupensis snail situation, and schistosomiasis epidemic data of human and cattle from 2008-2010, 60 villages from Hunan, Hubei, Jiangxi and Anhui provinces were selected and investigated, and the content of the investigation included the field feces, snail status, and epidemic situation of human and cattle. The systemic sampling was applied for snail investigation; the feces collected from snail investigation field were examined by the hatching test (3 bottles for 1 sample).

[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.

Study on histopathology, ultrasonography and some special serum enzymes and collagens for 38 advanced patients of schistosomiasis japonica.

Thirty-eight cases clinically diagnosed as advanced schistosomiaisis were subject to splenectomy in Dongzhi County Special Hospital for Schistosomiasis because of portal hypertension, splenomegaly and/or hypersplenism. Liver biopsy was undertaken in all cases during surgical intervention. Before operation, ultrasonography on the liver and spleen was carried out.