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目的了解湖北省江陵县血吸虫病流行区野粪分布及阳性情况,并对其空间分布特征进行分析描述,以及时发现传染源,为制定相应的监测与响应措施提供科学依据。方法 2011年在江陵县血吸虫病流行区,将疫情按严重程度分为高、中、低3层,每层抽取5个自然村作为调查点,选取江滩和沟渠作为调查环境,收集野粪并采用尼龙绢袋集卵孵化法检查。此外,采用描述性分析和空间分析方法,对野粪进行空间分布特征描述和回归分析。结果现场调查共收集野粪701份,野粪平均密度为0.055 6份/100 m~2;检出阳性野粪82份,野粪阳性率为11.70%。回归分析结果表明,野粪阳性率与人群感染率、感染性钉螺面积和耕牛存栏数之间存在空间相关性,其模型的校正R2值为0.58。结论江陵县野粪阳性率与人群感染率、感染性钉螺面积及耕牛存栏数之间存在空间正相关关系,可以根据其空间分布特征进行重点防控。
Objective To understand the distribution and positive status of wild manure in schistosomiasis endemic areas in Jiangling County, Hubei Province. The spatial distribution characteristics of the samples were analyzed and described, and the source of infection was found in time to provide a scientific basis for the development of corresponding monitoring and response measures. Methods In 2011, in schistosomiasis endemic areas of Jiangling County, the epidemic situation was divided into three levels of high, medium and low levels according to the seriousness. Five villages were selected as the investigation points in each layer. The riverside and ditches were selected as survey environment, Nylon silk bag egg hatching test. In addition, the descriptive analysis and spatial analysis methods were used to describe and analyze the spatial distribution of wild manure. Results A total of 701 wild samples were collected from the field investigation. The average density of wild samples was 0.055 6 copies / 100 m ~ 2. 82 positive samples were detected, and the positive rate was 11.70%. Regression analysis showed that there was a spatial correlation between the positive rate of stool and the population infection rate, the area of infected snails and the number of cattle population, and the corrected R2 value of the model was 0.58. Conclusion The positive rate of stool in Jiangling County has a positive spatial relationship with population infection rate, snail snail area and cattle population, which can be controlled according to its spatial distribution.