1987年在川西南以嗜人按蚊为主要媒介的间日疟流行区35个县的276个乡,222.9万人口的地区用溴氰菊酯喷洒蚊帐1 489 929顶,1988年扩大为42个县385个乡385.2万人口,喷洒蚊帐2 259 286顶,占蚊帐总数的96.67%,受药量为9.6～12mg/m~2,经连续两年灭蚊后,嗜人按蚊和中华按蚊的密度分别较灭蚊前下降97.4%和98.9%。发病人数由1986年的60 264人减少为14 572人,下降75.7%,显示较好防疟效果. In 1987, in 276 townships of 35 counties with anopheles anopheles as the main medium in southwestern Sichuan, 1,289,929 mosquito nets were sprayed with deltamethrin in the area of ​​2.229 million and expanded to 42 in 1988 The population of 385.2 thousand people in 385 townships was sprayed with 2 259 286 mosquito nets, accounting for 96.67% of the total number of mosquito nets. The dosage was 9.6-12 mg / m 2. After two consecutive years of mosquito control, the Anopheles anthropophagus and Anopheles sinensis The density decreased 97.4% and 98.9% respectively compared with that before mosquito control. The number of illnesses dropped from 60 264 in 1986 to 14 572, a decrease of 75.7%, indicating a better anti-malarial effect.