【摘要】 本文报道了成都市1987－1995年连续9年在47万余人口30个乡范围内以溴氰菊酯喷浸蚊帐灭蚊抗疟的效果．采用剂量为9．6－12．8mg／m2，共处理蚊帐近60万顶，处理率达97％以上。使嗜人按蚊密度和叶人率下降97％以上，学龄儿童疟原虫率和发热病人疟原虫阳性率降至0，疟疾发病率下降98．44％，其中14个乡疟疾病例为0，成为建国以来疟疾处于低度流行时期。更多还原

【Abstract】 DeltamethriR with a dooagr of 9. 6-12. 8 mg/m2 sprayed/impregnated to about 0. 6 million mosquito usts to coritrol rnalaria vectors were conducted from 1987 to 1995 in 30 townships with 470000 population in Chengdu area. Deltarnethrin on nets was decompoed to 43. 65% 5 months after treatrnent. LT50 for An. anthropophagus was 1. 4 minutes and LT95 6. 6 minutes. Mosquito density and landing rate decreased over 97%. Parasites in school aged children and positive rate of fever cases dropped to zero. Malaria incidence decreased by 98. 44% and in 14 townships it dropped to zero. There were no other large scale antimeasures had ben conducted in hyperendemic malaria areas during the 9 years. Now,Chengdu has become the area with lowest malaria transmission since 1949.更多还原