The Research About The Influence Of Water Level Change On The Spread Of Schistosomiasis And The Comprehensive Control Strategy In Poyang Lake Region

Poyang Lake regional is a seasonal water level changes area. Its natural andgeographical environment provides a good breeding conditions for snails andschistosomiasis.So Poyang Lake region to become re-infected areas of the lakesschistosomiasis. The water level change is an important factor for schistosomiasis riskof infection and prevalence: Schistosoma japonicum, the only intermediate host-snails hydrological conditions also have specific requirements; Have an importantimpact on water level fluctuations on people, livestock, range of motion andfrequency; Many aspects of the schistosome life cycle and the water are closelyrelated. Therefore, water level changes in life history and people and livestockactivities in the snails of Poyang Lake region, and master of the Lake District snailepidemic, and then put forward a comprehensive prevention and control strategies ofgreat significance.This thesis is thought that the Poyang Lake stars hydrological stations dailywater level data(1990-2007a) and the Xingzi County, West Wugui Island over theyears the snail data(2000-2007a), access to large amounts of literature,using thecorrelation method,to study Poyang Lake water level changes on the breeding ofsnails, schistosomiasis transmission and the source of infection.Found that the main flood season every year push, withdrawal of water inadvance, the dry season water level is lower, Poyang Lake, the dry season haslengthened. Poyang Lake in recent years, with consistently lower and not the stabilityof the phenomenon have occurred,increase the uncertainty of Poyang Lake. This willgreatly inhibit the breeding of snails.Correlation analysis using SPSS software for Oncomelania area of Poyang Lakeregion and the water level changes between. Found that snail islet area and islet areawas strongly related to Lo islet area and islet number of blocks a negative correlation.Analysis the Nanyangfan, Qianhu, Ximiao and Zhuxi Village,s schistosomiasissurvey data. Found that the positive rate of the village residents reduced year by year.Men, the number of infections than women. The infected area residents infected withschistosomiasis tends to a steady decline in general, but the epidemic decline.Proposed the system of comprehensive prevention strategy, including key technologies, and supporting measures. For the most critical link in the chain ofschistosomiasis transmission, schistosome eggs as a control target, taken to preventthe eggs in the source of infection droppings pollute the environment for the purposeof technical measures. In the side of the supporting measures, focus on chemotherapy,the choice of the best time and focus groups. In addition, strengthening the monitoringof the bottomland of the snail, schistosomiasis control health education and vocationalskills training and infected areas of industrial restructuring, schistosomiasis controlpolicy and the improvement of the management system are an essential part ofschistosomiasis control system.