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目的:对扬州市2007年流行性感冒(流感)的病原学监测结果进行分析,了解扬州地区流感流行情况,为今后的流感防治工作提供科学的依据。方法:每周采集流感样病人咽拭子标本5~15份,用MDCK细胞进行流感病毒分离,以血凝抑制方法(HI)进行流感病毒型别鉴定。结果:2007年共采集并检测流感样病例咽拭标本736份,分离出流感病毒45株,分离率为6.11%。其中H3N2亚型33株,占73.33%;B型12株,占26.67%。全年除11月和12月未分离出毒株外,其余各月均分离出毒株。结论:2007年扬州市有H3N2型和B型(Victoria系和Yamagata系)流感病毒流行,其中以H3N2型流感病毒为流行优势株。流感病毒流行有明显季节性,上半年1~4月和下半年7~10月为发病高峰。
Objective: To analyze the etiological surveillance results of influenza (influenza) in 2007 in Yangzhou, understand the prevalence of influenza in Yangzhou and provide a scientific basis for future prevention and control of influenza. Methods: 5 ~ 15 swab samples of influenza-like patients were collected weekly. Influenza virus was isolated from MDCK cells and influenza virus type was identified by hemagglutination inhibition (HI). Results: In 2007, 736 swab samples of influenza-like illness were collected and detected, and 45 strains of influenza virus were isolated with the isolation rate of 6.11%. Among them, 33 were H3N2 subtypes (73.33%), 12 were type B (26.67%). In addition to the non-isolates were isolated in November and December, the rest of the isolates were isolated. Conclusion: In 2007, H3N2 and B (Victoria and Yamagata strains) were predominant in Yangzhou City, among which H3N2 influenza virus was the predominant strain. Influenza epidemics have obvious seasonal, the first half of 1 ~ April and the second half of July to October peak incidence.