增效醚与溴氰菊酯混配浸泡蚊帐对疟疾媒介按蚊残效的观察

Residual Effect of Deltamethrin and Piperonyl butoxide(PBO)-Impregnated Bednets on Anopheles

目的观察比较用增效醚与溴氰菊酯(1∶1)混配浸泡蚊帐和单一溴氰菊酯浸泡蚊帐对中华按蚊、嗜人按蚊的滞效。方法采用WHO推荐的接触筒强迫接触法。结果2种不同质地蚊帐浸泡药物6个月后,混配剂型浸药蚊帐跟单一溴氰菊酯浸药蚊帐相比,对2种媒介按蚊的残效均较好,经统计学处理差异无统计学意义(P值均>0.05),24h恢复后中华按蚊和嗜人按蚊的死亡率仍达100%。结论在疟疾流行季节用混配剂型浸泡蚊帐能够对媒介按蚊起到防制作用。

Objective To observe the residual effects in cotton and nylon bednet treated with deltamethrin and PBO （1：1） on Anopheles anthropophagus and An. sinensis. Methods The method which WHO suggested was used. Results After 6 months, there was no significant difference in statistics （P 〉 0.05 ） of the residual effects on An. anthropophagus and An. sinensis between the two treatment of bednets, ie. treated with deltamethrin mixed with PBO, and deltamethrin only. The mortalitesof An. anthropophagus and An. sinensis were still 100% after 24 hours. Conclusion The bednet treated with deltamethrin mixed PBO during the malaria transmission season will be efficient for vector control.