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

作　　者：姬莉莉[1] 喻金玉 毛玉梅[1] 崔淑娟[2] 杨耀武 Ji Lili;Yu Jinyu;Mao Yumei;Cui Shujuan;Yang Yaowu(Huairou District Center for Disease Control and Prevention,Beijing 101400,China;Beijing Municipal Center for Disease Control and Prevention,Beijing 100013,China;China National Accreditation Service for Conformity Assessment,Beijing 100062,China)

机构地区：[1]北京市怀柔区疾病预防控制中心,北京101400 [2]北京市疾病预防控制中心,北京100013 [3]中国合格评定国家认可委员会,北京100062

出　　处：《疾病监测》2023年第7期781-785,共5页Disease Surveillance

基　　金：首都卫生发展科研专项项目(No.2022-1G-3014)。

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 49716例,占门/急诊总数的0.35%。8年共采集ILI咽拭子标本17156份,其中流感病毒阳性标本3091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(χ^(2)=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。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 influenzalike 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 49716 cases of ILI were reported from two sentinel hospitals in Huairou,accounting for 0.35%of the total outpatient/emergency cases,and 17156 pharyngeal swabs were collected from the ILI cases during the eight years,of which 3091 were positive for influenza viruses,with a positive rate of18.02%.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(χ^(2)=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.

关 键 词：流感病毒 流感样病例 病原学监测 

分 类 号：R211[医药卫生—中医学] R511.7