云南省乙型脑炎病毒宿主和媒介研究

Host and Vector of Japanese Encephalitis Virus in Yunnan Province,China

于 1 978年至 1 997年 ,从云南猪血液和乳猪脑组织中分离到乙型脑炎 (JE)病毒 5株 ,从蝙蝠脑组织中分得JE病毒1 0株 ,从鸟类脑组织中分得JE病毒 5株 ,从 1 5种蚊虫体内分离到JE病毒 6 3株 ,从 2种蠓类中分得JE病毒 2株。分析认为 ,猪是JE病毒的主要扩散宿主 ,蝙蝠和鸟类在该病毒保存和传播中起重要作用 ;三带喙库蚊是该病毒的主要传播媒介 ,伪杂鳞库蚊、霜背库蚊、蚊腿库蚊、白蚊伊蚊和刺扰伊蚊为重要媒介 ,蠓类亦可传播该病毒。

Five strains of Japanese encephalitis(JE) virus were isolated from blood and brains tissues of pig,ten strains of JE virus were isolated from brain tissues of bat,five strains of JE virus were isolated from brain tissues of bird,sixty_three strains of JE virus were isolated from fifteen species of mosquitoes,two strains of JE virus were isolated from midges in Yunnan,China in 1978～1997.The investigation showed that pigs are considered as the amplifier host of JE virus transmission,Bats and Birds play a role in the maintenance and transmission of JE virus in nature.Culex tritaeniorhynchus is the principal vector of JE,while C.pseudovishnui,C.whitmorei,C.theileri,Aedes albopictus and Ae.vexans are important vectors.midges are capable of transmitting the virus.