姬莉莉, 喻金玉, 毛玉梅, 崔淑娟, 杨耀武. 2014-2022年北京市怀柔区流感样病例流行情况及病原学监测分析[J]. 疾病监测, 2023, 38(7): 781-785. DOI: 10.3784/jbjc.202303030081
引用本文: 姬莉莉, 喻金玉, 毛玉梅, 崔淑娟, 杨耀武. 2014-2022年北京市怀柔区流感样病例流行情况及病原学监测分析[J]. 疾病监测, 2023, 38(7): 781-785. DOI: 10.3784/jbjc.202303030081
Ji Lili, Yu Jinyu, Mao Yumei, Cui Shujuan, Yang Yaowu. Epidemiological and etiological surveillance for influenza-like illness in Huairou district, Beijing, 2014−2022[J]. Disease Surveillance, 2023, 38(7): 781-785. DOI: 10.3784/jbjc.202303030081
Citation: Ji Lili, Yu Jinyu, Mao Yumei, Cui Shujuan, Yang Yaowu. Epidemiological and etiological surveillance for influenza-like illness in Huairou district, Beijing, 2014−2022[J]. Disease Surveillance, 2023, 38(7): 781-785. DOI: 10.3784/jbjc.202303030081

2014-2022年北京市怀柔区流感样病例流行情况及病原学监测分析

Epidemiological and etiological surveillance for influenza-like illness in Huairou district, Beijing, 2014−2022

  • 摘要:
      目的   分析2014—2022年北京市怀柔区流行性感冒(流感)流行情况和病原学特征,为流感防控提供科学依据。
      方法   收集2014—2022年北京市怀柔区流感样病例(ILI)数据和病原学监测结果进行描述及统计分析。
      结果   2014年9月至2022年8月,怀柔区两家哨点医院累计报告ILI 49 716例,占门/急诊总数的0.35%。 8年共采集ILI咽拭子标本17 156份,其中流感病毒阳性标本3 091份,阳性率为18.02%。 25~岁年龄组阳性占比较高,为20.21%。 各监测年度流感阳性率高峰均集中于当年12月至次年3月,各年度流感病毒亚型构成比差异有统计学意义(χ2=1785.065,P<0.001),主要亚型为甲型H3N2和乙型Victoria系。2020年后流感病毒阳性率明显降低。
      结论   2014—2022年北京市怀柔区流感病毒流行季节主要为冬春季,流感病毒各亚型交替流行或同时流行,流行强度不同。 25~岁人群是重点防控人群。综合疫情防控措施也可以显著降低流感的流行强度。

     

    Abstract:
      Objective  To understand the epidemiological and etiological characteristics of influenza in Huairou district, Beijing, from 2014 to 2022, and provide scientific evidence for influenza prevention and control.
      Methods  Data of influenza-like illness (ILI) cases and etiological surveillance results in Huairou from 2014 to 2022 were collected for descriptive and statistical analyses.
      Results  From September 2014 to August 2022, a total of 49 716 cases of ILI were reported from two sentinel hospitals in Huairou, accounting for 0.35% of the total outpatient/emergency cases, and 17 156 pharyngeal swabs were collected from the ILI cases during the eight years, of which 3 091 were positive for influenza viruses, with a positive rate of 18.02%. The positive rate was highest in age group 25– years (20.21%). The peak of positive rate of influenza virus in all the surveillance years occurred during December-March, and the differences in the annual composition of influenza virus subtypes were significant (χ2=1785.065, P<0.001), with the main subtypes of A (H3N2) and B Victoria lineage. The influenza virus positivity rate was significantly lower after 2020.
      Conclusion  Influenza mainly occurred in winter and spring in Huairou from 2014 to 2022, with different subtypes and different intensities. People in age group 25– years were the key population affected. Comprehensively preventive and control measures could also significantly reduce the incidence of influenza.

     

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