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目的观察目平湖草洲围栏造林控制传染源降低血吸虫病疫情的效果。方法选择目平湖西岸五一村为纵向观察点,观察垸外草洲围栏造林前后钉螺密度,感染螺变化及人畜活动和病情变化。结果观察区围栏造林后活螺密度大幅度下降,感染性钉螺连续3年为0,人畜上洲活动频次明显减少,野粪密度降低,连续3年无野粪阳性,人群粪检阳性率由11.93%降至1.42%,下降了88.10%(χ2=195.66,P<0.001),耕牛粪阳率由17.42%下降为3.45%,下降了80.20%(χ2=11.19,P<0.005)。结论湖区大面积草洲围栏造林、封洲禁牧,能有效控制传染源、净化湖洲,减少人畜重复感染,降低血吸虫病疫情。
Objective To observe the effect of reducing the epidemic situation of schistosomiasis by controlling the source of infection in the fenyanghuzhou peninsula. Methods Wulian village on the west bank of Muping Lake was selected as the longitudinal observation point. The density of snail, the change of snails and the changes of human and animal activities and disease before and after embarkation were observed. Results The density of living snails decreased significantly after enclosure in the observation area. Infected snails were 0 for 3 years in a row. The frequency of activities on the population was significantly reduced and the density of wild stools decreased. The stool positive rate of the crowd was 11.93 (Χ2 = 195.66, P <0.001). The positive rate of cattle manure dropped from 17.42% to 3.45%, down by 80.20% (χ2 = 11.19, P <0.005). Conclusion The large area of grassland fence afforestation and ban on animal husbandry in the lake area can effectively control the source of infection, purify the lake, reduce the repeated infection of human and animals, and reduce the epidemic situation of schistosomiasis.