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目的评价基于垸尺度的实施以控制血吸虫病传染源为主综合措施的效果。方法以“垸”为单位收集安乡县血吸虫病病情、螺情等数据,采用趋势χ2检验对数据进行统计分析。结果安保垸累计淘汰牛2 606头,干预后第5年,人群感染率由干预前的8.04%降至0.70%,垸外钉螺感染率由0.56%降至0.05%;安澧垸累计淘汰牛535头,干预后第3年,人群感染率由干预前的5.87%降至1.09%,垸外钉螺感染率由0.17%降至0.07%;安造垸累计淘汰牛62头,干预后第2年,人群感染率由干预前的2.67%降至0.39%,垸外钉螺感染率由1.12%降至0;安昌垸未淘汰牛,人群感染率由干预前的1.76%降至1.23%。结论以淘汰牛为主的血吸虫病传染源控制综合措施能较大幅度降低疫区人群和钉螺感染率。
Objective To evaluate the effect of controlling the source of schistosomiasis based on the implementation of the embankment scale. Methods The data of schistosomiasis and snail in Anxiang county were collected in units of “embankment”, and the data were analyzed by trend χ2 test. Results The safety embankment totaled 2 606 head-quarters. In the fifth year after the intervention, the infection rate of the population decreased from 8.04% before intervention to 0.70%, and the infection rate outside the embankment decreased from 0.56% to 0.05% In the first 3 years after the intervention, the infection rate of the population decreased from 5.87% before intervention to 1.09%, and the infection rate of Oncomelania outside the embankment decreased from 0.17% to 0.07%. In the first year after the intervention, 62 cattle were eliminated, The infection rate of the population decreased from 2.67% before intervention to 0.39%, and the infection rate of snail outside the embankment dropped from 1.12% to 0; the population of Achang was not eliminated and the infection rate of the population was reduced from 1.76% before intervention to 1.23%. Conclusion The comprehensive control measures of controlling the source of schistosomiasis out of cattle can significantly reduce the population infection rate and snail infection rate in affected areas.