2006-2007年辽宁省儿童流行性感冒病原学检测分析

目的　分析辽宁省2006-2007年度流行性感冒（流感）的病原学及流行特征。方法　在流行季节采集咽拭子用鸡胚和细胞分离方法，进行间接血凝抑制试验。结果　共采集儿童标本213份，分离流感毒株41株，分离率为19.25%；其中A型31株（H1亚型14株、H3亚型17株），B型10株，流感的高发年龄主要集中在4～9岁之间。结论　2006-2007年辽宁省内同时有三种亚型的流感病毒在流行，2006年底前优势株是H1亚型，2007年优势株转为H3亚型和B亚型。

Etiologic analysis of children influenza in Liaoning province, 2006-2007

Objective The study was conducted to investigate etiologic and epidemiological characteristics of influenza viruses in Liaoning province from 2006 to 2007. Methods Influenza viruses was isolated from throat swab samples through embryonated eggs in conjunction with cell culture,and identified by hemagglutination inhibition test. Results A total of 213 samples were obtained from children,and 41 strains of influenza virus were isolated,including 31 Type A (14 Subtype H1,17 Subtype H3) and 10 Type B isolates,the isolation rate being 19.25%. Children aged 4 to 9 years were primarily affected. Conclusion Influenza viruses of three different subtypes were prevailing in Liaoning from 2006 to 2007,the predominant subtype being H1 before the end of 2006 and H3 and B since 2007.