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[目的]了解深圳市龙岗区流感的流行特征及流行毒株的变迁情况。[方法]回顾性收集2008～2009年的流感样病例监测资料、流感病毒分离和暴发疫情资料进行统计分析。[结果]2008～2009年,各监测点共上报流感样病例63743例,占门诊就诊病例总数的8.02%,2009年的ILI%年平均值显著高于2008年的ILI%年平均值(χ2=256.09,P﹤0.01);共报告流感暴发疫情60起,主要集中在3～8月(90.00%),以学校和托幼机构(80.00%)暴发为主;2008～2009年,A、B型季节性流感均引起流感暴发流行,但2008年以B型流感流行为主,而2009年则以A型流感流行为主;不同年度间流感监测点中ILI标本的病毒分离率差异有统计学意义(χ2=14.57,P﹤0.01)。[结论]A、B型流感在不同年度以不同强度同时或交替在当地交替流行,学校是流感暴发疫情监测的重点,应加强流行高峰前的流感疫苗接种等综合性预防措施。
[Objective] To understand the epidemic characteristics of influenza in Longgang District of Shenzhen City and the changes of epidemic strains. [Methods] The surveillance data of influenza-like cases from 2008 to 2009 were collected retrospectively, and the data of influenza virus isolation and outbreak were collected for statistical analysis. [Results] From 2006 to 2009, a total of 63,743 flu-like cases were reported at various monitoring sites, accounting for 8.22% of the total number of outpatient visits. The annual average of ILI% in 2009 was significantly higher than the annual average of ILI% in 2008 (χ2 = 256.09, P <0.01). A total of 60 cases of influenza outbreaks were reported, mainly from March to August (90.00%), mainly from schools and nurseries (80.00%). In 2008-2009, type A and B Seasonal flu caused influenza outbreak, but in 2008 the prevalence of influenza B, while the 2009 influenza A-based epidemic; ILI specimens in different years, influenza virus isolation rates were statistically significant difference (χ2 = 14.57, P <0.01). [Conclusion] Influenza A and B were swiftly or alternately alternated with different intensities in different years. The school is the focus of flu outbreak surveillance. Comprehensive precautionary measures such as influenza vaccination should be strengthened before epidemic peak.