白纹伊蚊和埃及伊蚊对基孔肯雅病毒的易感性和传播性的研究

用４株基孔肯雅病毒经口感染白纹伊蚊和埃及伊蚊，进行了易感性和传播性的研究。结果表明，这两种蚊虫对基孔肯雅病毒易感。无论白纹伊蚊或埃及伊蚊，感染后第５－６天即可通过吸血将病毒传播给乳鼠，至第８－１３天，传播率可高达５５．５５％－１００％。感染蚊亦可经叮咬将病毒传播给小鸡。埃及伊蚊的易感性和传播率高于白纹伊蚊。实验还发现，不同来源毒株之间存在一定差异，如分离自云南白纹伊蚊的Ｍ８１株的感染率和传播率均高于其它毒株。这些结果表明，白纹伊蚊和埃及伊蚊在基孔肯雅病毒的保存和传播中起重要作用。

Susceptibillty and Transmissibility of Aedes albopictus and Aedes aegypti Mosquitoes to Chikungunya Virus

edes albopictus and Ae.aegypti mosquitoes were tested by oral infection with four strains of Chikuirgunya(CHIK) virus isolated from Yunnan,China and Africa for their susceptibility and transmissibility.Studies showed that these two species of mosquitoes were susceptible to CHIK virus. Either Ae.al,bopietus or Ae aegypti for 5th to 6th day after infection were capable of transmitting CHIK virus by biteto suckling mice.Their transmission rates were 55.55%-100% on the 8th to 13th day post-infec.tion.In another experiment,infected mosquitoes were capoble of transmitting CHIK virtis by bite tochickens.Infection and transmission rates were hisher in Ae.aegypti tested than in Ae.albopictus tested.The susceptibility and transniission potentials of the defferent strains of CHIK virus had some differences from each other,such as the M81 strain isolated from Ae.albopietue in Yunnan was apparentlymore virulent than the other strains.These results indicate that Ae.albopictus and Ae.aegypti from China have the potential tu play a role in the niaintenance and transinission of CHIK virus in nature.