关键词: 埃及伊蚊, 登革2型病毒, 感染率, 地理株

Abstract: Objective To study the susceptibility of Aedes aegypti to DEN-2 virus among 4 geographic strains from China and Baro of Indonesia.Methods Aedes aegypti of different geographic population were infected with dengue 2 virus through oral and indirect fluoroimmunoassay was used to detect antigen the virus in brain of Aedes aegypti.Results(1) Using mice- blood-sugar virus suspension,the infection rate of Baro strain to dengue 2 virus shows significant variation with Hainan strain's(P=0.007 9< 0.01) and Taiwan strain's(P=0.0116<0.05).But no significant variation with Guangdong strain's(P>0.05).(2) With the reduction of virus titre(TCID_{50<.sub>),the infection rate of every geographic strain to dengue 2 virus shows extraordinarily marked downtrend.(3) No significant difference has shown in susceptibility of every strain of full-blood by mice and pig- blood-sugar virus suspension.Conclusion The infecting effects of different geographic strains of Aedes aegypti to dengue 2 virus show significant difference.}