2009—2011年深圳市福田区流感样病例流行特征

Analysis on epidemiological characteristics of influenza-like illness in Futian District of Shenzhen City from 2009-2011

目的分析深圳市福田区2009—2011年流感样病例(ILI)监测结果,探讨流感大流行后疫情趋势与预防控制对策。方法根据《全国流感监测方案(试行)》,收集哨点医院ILI就诊数,采集流感样病例鼻咽拭子,采用MDCK细胞进行流感病毒分离,采用血凝抑制试验进行流感病毒型别的鉴定。结果 3年累计报告流感样病例25 654例,平均ITL%为5.09%,共采集ILI咽拭子标本1 061份,分离到阳性菌株335份,阳性率为31.57%。结论福田区流感流行高峰在6—7月,3月有1个小高峰,各亚型交替出现。2009年H1N1流感大流行后,未监测到流感变异毒株。

[Objective] To analyze the surveillance results of influenza-like illness （ILI） in Futian District of Shenzhen from 2009-2011, explore the trend of epidemic situation, and discuss the prevention and control measures after pandemic influenza of H1N1. [ Methods] According to the National influenza surveillance program （Trial）, ILI cases and the nasopharyngeal swab sam- ples were collected from the sentinel hospitals, MDCK cells were used for influenza virus isolation, and the hemagglutination inhibi- tion test was applied to identify influenza virus type. [ Results] From 2009-2011, a total of 25 654 cases of ILI were reported, and average ITL% was 5. 09%. Among 1061 throat swab samples, there were 335 influenza strains with the positive rate of 31.57%. [ Conclusion] The epidemiologic peak of influenza is June to July with a small peak in March in Futian District, and the virus sub- types of influenza have occurred alternately. After the pandemic influenza of H1N1 in 2009, variant influenza virus is not found.