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目的探讨移民建镇对血吸虫病传播的影响。方法采用入户问卷调查法,对移民建镇前后的3个研究试点:单退垸的西官垸、双退垸的青山垸及双退后自行返回废垸的集成垸的居民进行调查,并调查移民建镇前后的螺情和病情变化。结果集成垸、西官垸和青山垸移民建镇前人群血吸虫感染率分别为4.86%、4.89%、15.77%,移民建镇后人群血吸虫感染率分别为36.29%、5.56%、11.85%,移民建镇前耕牛血吸虫感染率分别为5.00%、10.71%、7.50%,移民建镇后分别为60.00%、40.00%、7.14%。移民建镇前集成垸、青山垸和西官垸的垸内钉螺面积、钉螺密度和感染螺密度分别为21.67、32.80、14.43hm2,0.0198、0.2000、0.01110只/0.1m2,0.0027、0、0只/0.1m2;移民建镇后分别为22.73、17.80、0hm2(西官垸自2001年垸内无螺),0.0236、0.0248、0只/0.1m2,0.0003、0.0008、0只/0.1m2。结论双退垸的居民血吸虫感染率略有下降,单退垸和双退后自行返回废垸的居民血吸虫感染率均有不同程度的上升。应加强对返回原地从事劳作人群的管理及血吸虫病的预防与治疗。
Objective To explore the impact of immigrant towns on the transmission of schistosomiasis. Methods The questionnaire survey was used to investigate three pilot projects before and after the relocation of the townsfolk: the West embankment with single embankment, the Qingshan embankment with double embankment, and the integrated embankment with double embankment to return to waste embankment for investigation Investigate the construction of the town before and after the immigration and spiral changes. Results The infection rates of schistosomiasis in the population of embankment, embankment and Qingshan embankment were 4.86%, 4.89% and 15.77%, respectively. The infection rate of schistosomiasis was 36.29%, 5.56% and 11.85% The prevalence of schistosomiasis in pre-town areas was 5.00%, 10.71% and 7.50%, respectively, and were 60.00%, 40.00% and 7.14% respectively after the towns were resettled. Before the construction of the town embankment embankment, Qingshan embankment embankment and West embankment embankment snail area, snail density and infected snail density were 21.67,32.80,14.43hm2,0.0198,0.2000,0.01110 /0.1m2,0.0027,0,0 only /0.1m2; After the relocation of the town were 22.73,17.80,0 hm2 (West official embankment since 2001 embankment non-spiral), 0.0236,0.0248,0 /0.1m2,0.0003,0.0008,0 /0.1m2. Conclusions The infection rates of schistosomiasis in residents with double withdrawal are slightly decreased. The infection rate of schistosoma japonicum among residents who returned to wasteland with single withdrawal or double withdrawal increased in varying degrees. Should be strengthened to return to work in the local population management and prevention and treatment of schistosomiasis.