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目的评价改良压碎逸蚴法(压逸法)现场检测感染性钉螺效果。方法 2011年4-5月,在湖北省荆州市进行查螺,以村为单位随机分组,比较压逸法和压碎法现场检测感染性钉螺的符合率、检出率及人力投入。结果检测14个有螺环境,压逸法和压碎法感染性螺点检出符合率为100%。春季查螺,压逸法检测539个有螺村、3536个螺点,压碎法检测671个有螺村、11375个螺点,两法对感染性螺点村的检出率分别为25.79%和28.46%,差异无统计学意义(χ2=1.0795,P>0.05);对感染性螺点的检出率分别为5.57%和3.66%,差异有统计学意义(χ2=95.4641,P<0.01)。压逸法比压碎法减少人力投入87.86%,平均每乡(镇)节省人力12.95人·d。结论压逸法快速确定感染性螺点效果明显,定性准确,节省人力投入,适用于疫区批量检测感染性钉螺及感染性钉螺环境(段)。
Objective To evaluate the effect of the improved crushed falcate method (pressure escape method) on-site detection of snails. Methods From April to May in 2011, the investigation was carried out in Jingzhou City, Hubei Province. Randomly grouped villages were used to compare the coincidence rate, the detection rate and the manpower input of Incontinence and crushing methods. Results The results showed that 14 conch environments were detected, and the coincidence rate was 100% for both pressure escape and crushed infective snails. Spring check snail, pressure escape method to detect 539 with Lo Village, 3536 snail points, crushing test 671 snail village, 11375 snail point, the two methods of infected snail village detection rates were 25.79% And 28.46%, respectively (χ2 = 1.0795, P> 0.05). The detection rates of infective snail spots were 5.57% and 3.66%, respectively, with statistical significance (χ2 = 95.4641, P <0.01) . Pressure escape law than the crushing method to reduce manpower input 87.86%, average per township (town) to save manpower 12.95 people · d. Conclusions The method of pressure escaping is rapid and effective to determine the infective snail point. It is qualitative and accurate and saves manpower investment. It is suitable for the batch detection of infectious snail and infecting snail environment in the epidemic area.