【摘要】 1995年10月至1996年9月，广东省共分离到流感病毒46株，包括甲3型34株，甲1型2株，乙型10株。其中具“O”相特征的甲3型流感病毒23株。甲／广东／1／96、甲／广东／3／96的抗原性与往年甲3型的抗原性相比已发生明显的漂移。韶关市和海珠市两地的双相血清检测结果均证实为甲3型流感病毒感染，117份健康人群血清抗体检测结果，当年流行株甲／广东／1／96的抗体阳性率较低（58．97％）。因此甲3型为流行优势毒株，该型病毒抗原性漂移及人群抗体水平较低是造成流行的主要原因。更多还原

【Abstract】 From October 1995 to September 1996,46 strains of influenza virus were isolated in Guangdong province.34 strains were classified as type A(H3N2),23 strains of which were of phase 0;2 strains, type A(H1 N1 ) and10 strains, type B. There was a prominant antigenic drift in A/Guangdong/1/96 compared to the type A(H3N2 )strains isolate in past years. The test of paired sera in Shaoguan city and Zhuhai city confirmed that theepidemics of influenza were caused by type A(H3N2)influenza virus and 58 .97 % of serum specimens collectedfrom 117 healty person with aniboty to A/Guangdong/1/96,the epdemic strain of this year. We concluded thatA(H3N2 ) was the epidemic strain and the antigenic drift and the low antibody titre in population contributed tothe epidemics of influenza in 1996.更多还原