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目的评价氯硝柳胺泥敷灭螺在四川省德阳地区应用的效果。方法在德阳市血吸虫病流行区,春季或秋季进行泥敷,灭螺前开展基线调查,用氯硝柳胺6g/m2剂量泥敷灭螺;同时设立喷洒灭螺对照。观察灭螺后30 d灭螺效果,并观察钉螺1年后的远期效果。结果泥敷灭螺优于喷洒灭螺,2法灭螺30 d后有螺面积下降率分别为79.60%和53.51%,钉螺平均密度下降率分别为96.85%和62.66%;泥敷灭螺1年后的钉螺密度平均下降约80%。结论氯硝柳胺泥敷灭螺法具有药效持续时间长,对土表钉螺、土内钉螺有较好的效果,建议在现场泥敷灭螺中使用6g/m2的剂量较为适宜。
Objective To evaluate the effect of niclosamide mud snail applied in Deyang, Sichuan Province. Methods In schistosomiasis endemic areas of Deyang City, the baseline survey was carried out in the spring or autumn in the areas of mud dressing and molluscicide, and the snail was treated with niclosamide 6 g / m2. The effect of snail control 30 days after molting was observed, and the long-term effect of snail after 1 year was observed. Results The results showed that snails were better than spraying snails. The descending rates of snail area were 79.60% and 53.51% respectively after 30 days and the descending rates of average density of snails were 96.85% and 62.66%, respectively. After the snail density decreased by about 80% on average. Conclusion The niclosamide mud-smelling method has a long duration of efficacy and has good effect on oncomelania snail and soil snail. It is suggested that a dose of 6 g / m2 should be used in the field.