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在西双版纳州景洪、勐海和勐腊县（市）捕获成年雌性蚊虫8属34种34508只。夜晚在农村畜圈及其周围采获蚊虫21种,优势蚊种为棕头库蚊和三带喙库蚊;白天在野外竹林采获蚊虫25种,优势蚊种为圆斑伊蚊和白纹伊蚊。从三带喙库蚊（8株）、霜背库蚊（4株）、伪杂鳞库蚊（3株）、环带库蚊（1株）、棕头库蚊（1株）、中华按蚊（3株）、刺扰伊蚊（2株）、白纹伊蚊（1株）、窄翅伊蚊（1株）和常型曼蚊（1株）中分离到乙型脑炎病毒25株。分析认为,三带喙库蚊是当地乙型脑炎病毒的主要传播媒介,伪杂鳞库蚊和霜背库蚊亦是该病毒的重要传播媒介。白纹伊蚊等带毒蚊种亦参与该病毒的传播。
3450 species of 8 genera and 34 adult female mosquitoes were captured in Jinghong, Menghai and Mengla counties of Xishuangbanna Prefecture. Twenty-one species of mosquitoes were harvested in and around the farm pens at night, and the dominant mosquito species were Culex tritaeniorhynchus and Culex tritaeniorhynchus; in the daytime, 25 species of mosquitoes were harvested in the wild bamboo forests. The dominant mosquito species were Aedes albopictus and Aedes albopictus Aedes mosquito. From three strains of Culex tritaeniorhynchus (8 strains), Culex pipiens pallens (4 strains), Culex pseudorellata (3 strains), Culex pipiens pallets (1 strain), Culex pipiens pallens (1 strain) (3 strains), Aedes aegypti (2 strains), Aedes albopictus (1 strain), Aedes narrow-winged (1 strain) and common Man mosquito (1 strain) Strain. According to the analysis, Culex tritaeniorhynchus is the major transmission medium of Japanese encephalitis virus, and Culex pseudomeriae and Culex pipiens pallets are also important vectors of the virus. Aedes albopictus and other mosquito species also involved in the spread of the virus.