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目的分析江阴市2012年-2014年流感监测结果,为本市今后的流感预防控制策略提供科学依据。方法共采集流感样病例咽拭子1 390份,采用real-time RT-PCR检测方法进行流感病毒核酸检测,并对流感样病例(ILI)报告数据、病原学监测数据进行分析。结果流感病毒核酸检测阳性207份,检测总阳性率为14.89%,其中甲型H1N1流感病毒4份、甲1型流感病毒18份、甲3型流感病毒121份、甲型未分型24份、乙型流感病毒40份;60~岁组阳性率最高。不同性别阳性率比较差异无统计学意义。流感全年出现冬季和夏季2个小流行高峰。结论江阴市流感处于相对平稳状态,甲3型流感和乙型流感为优势毒株。但流感哨点监测工作仍然不能放松,特别需要警惕新型流感病毒株的出现和流行,同时加强学校、大型企业等人员密集场所的暴发性疫情监测。
Objective To analyze the results of influenza surveillance from 2012 to 2014 in Jiangyin City and provide a scientific basis for future influenza prevention and control strategies in this city. Methods A total of 1 390 throat swabs were collected from influenza-like cases. Real-time RT-PCR was used to detect influenza virus nucleic acid. Influenza-like cases (ILI) reports and pathogen surveillance data were also analyzed. Results The positive rate of influenza virus nucleic acid was 207 and the positive rate was 14.89%. Among them, 4 influenza A H1N1 viruses, 18 influenza A viruses, 121 influenza A viruses, 24 influenza A viruses, 40 influenza B virus; 60-year-old group the highest positive rate. The positive rate of different gender was no significant difference. The flu shows two small epidemic peaks in winter and summer all year round. Conclusion The flu in Jiangyin City was relatively stable, and Influenza A (3) and Influenza B (B) were the dominant strains. However, the surveillance of influenza sentinel surveillance can not be relaxed. In particular, vigilance should be given to the emergence and prevalence of new influenza virus strains and to strengthen the outbreak surveillance of outbreaks in densely populated places such as schools and large enterprises.