[Investigation of snails in Anhui Province in 2016].

Objective: To investigate the status of snails in Anhui Province in 2016, so as to provide the evidence for formulating the 13th Five-Year Plans for Schistosomiasis Control.

Methods: In 2016, a snail survey was conducted in Anhui Province according to the , covering all snail habitats or historical snail habitats and suspected environments of snail breeding, and the results of the survey were analyzed.

Results: In 2016, 22 848 environments were surveyed, and no schistosome-infected snails were found.

[Application of infrared camera technique in investigation of wild animals as infectious source of schistosomiasis].

Objective: To investigate the species and activities of wild animals infected with schistosome in hilly and mountain areas by using an infrared camera technique, so as to provide the evidence for the surveillance of schistosomiasis in these areas.

Methods: Six infrared cameras were selected and placed in 6 environments of the risk monitoring points of schistosomiasis in Shitai County in Anhui Province. The species and activities of the wild animals in the 6 environments were observed through the photographs and videos taken by the cameras.

[Investigation on endemic situation of schistosomiasis in infection-controlled regions in Anhui Province].

Objective: To understand the epidemic situation of schistosomiasis in 27 counties (cities, districts) that reached the criteria of schistosomiasis infection controlled in Anhui Province.

Methods: According to the requirement of The National Assessment Scheme of Schistosomiasis, 81 administrative villages where the schistosomiasis epidemic situation was relatively heaver in above-mentioned 27 counties (1 village per town, 3 towns per county) were sampled and investigated.

Results: From 2012 to 2014, 81 villages were investigated, and 34,293 residents received the serum examinations, and 1,086 were positive with a positive rate of 3.

[Impact on prevalence of schitosomiasis after runs of Three Gorges Reservoir Project in the section of Anhui province].

Objective: To investigate the changes of water level and the distribution of snails in Anhui province before and after runs of the Three Gorges Reservoir Project, and to determine the relationship between the two factors and schistosomiasis transmission.

Methods: The hydrologic data of Datong hydrologic station and the data of snail status and schistosomiasis morbidity in Anhui Province were collected. The data from 1991 to 2002 and 2003 to 2012 were considered as before and after the impoundment of the Three Gorges Reservoir Project.

Fine scale Spatial-temporal cluster analysis for the infection risk of Schistosomiasis japonica using space-time scan statistics.

Background: Marching towards the elimination of schistosomiasis in China, both the incidence and prevalence have witnessed profound decline over the past decades, with the strategy shifting from morbidity control to transmission control. The current challenge is to find out hotspots of transmission risk for precise targeted control in low-prevalence areas. This study assessed the risk at the village level, using the spatial and temporal characteristics of Schistosomiasis japonica in Anhui province from 2006 to 2012.

[Spatial-temporal analysis on the distribution of infected snail at the village level in Anhui province, 2006-2012].

Objective: The characteristics of spatial-temporal distribution on infected snails were analyzed at the village level in Anhui province, 2006-2012.

Methods: Data on the distribution of infected snails from 2006 to 2012 in Anhui province was collected. Spatial database was established by ArcGIS 9.

[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.

[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.

[Evaluation on the effect of comprehensive control strategy of schistosomiasis with emphasis on infection source control in Anhui province].

Objective: To evaluate the effect of comprehensive control strategy of schistosomiasis with emphasis on infection source control in Anhui province.

Methods: Forty endemic villages in Guichi district, Chizhou city, Anhui province were selected as national pilot villages in the years from 2006 to 2008, and another 10 provincial pilot villages were respectively selected from 10 highly endemic villages in 7 cities in 2007. The comprehensive infection source control measures, including "replace cattle with machines", "raise livestock in pens", "improve the sanitary toilets", "supply safe water " and so on were carried out among the above pilot villages.

[Analysis of trend of Oncomelania snail status in Yangtze River valley of Anhui Province, 1998-2009].

Objective: To understand the trend of Oncomelania hupensis snail distribution in Yangtze River valley of Anhui Province so as to provide an evidence for making out schistosomiasis prevention and control strategies in the future.

Methods: The snail data from 1998 to 2009 of the Yangtze River valley in Anhui Province were collected including the snail area, newly occurred and re-occurred snail areas, densities of snails and infected snails, etc., and the trend and influence factors were analyzed.

[Effect of project of afforestation for schistosomiasis prevention on snail control in marshland and lake regions].

Objective: To evaluate the effect of the project of afforestation for schistosomiasis prevention on Oncomelania hupensis control.

Methods: The situation of afforestation for schistosomiasis prevention in the field and the snail distribution in marshland regions were surveyed with the systematic sampling method in the spring, 2009. The database of snail distribution was established and the status of afforestation was investigated, and the effect of the project on snail control was evaluated.

[Outbreaks of acute schistosomiasis in Anhui province in 2003].

Objective: To analyze the outbreak patterns of acute schistosomiasis in Anhui province in 2003.

Methods: The criteria of emergency event for schistosomiasis issued by the Ministry of Health were applled in this study. Epidemiological data of acute schistosomiasis outbreak in Anhui province in 2003 were collected, checked and analyzed.