摘要
目的分析我国2017—2018年流感样病例暴发疫情的流行病学特征。方法数据来源于中国流感监测信息系统和突发公共卫生事件管理信息系统中中国各级疾病预防控制中心报告的2017年4月3日至2018年4月1日流感样病例暴发疫情的数据(不含中国香港、澳门和台湾数据),对实验室确诊为流感的暴发疫情进行描述性流行病学分析。结果2017—2018年共报告流感样病例暴发疫情2398起(指病例数≥10例的暴发疫情),累计报告病例87084例,其中,流感暴发疫情2323起,病例数为85531例。南、北方流感暴发疫情均主要集中于2017年11月至2018年1月,最高峰均出现在2017年12月。南方报告流感样病例暴发共1850起(77.15%),北方为548起(22.85%)。暴发疫情发生的主要场所是中小学及幼托机构,共报告2210起(92.16%)。流感暴发规模以10~29例的小规模聚集性病例为主,共1606起(66.97%)。实验室检测结果显示,整个年度流感暴发疫情以B型流感为主,占62.76%(1505起)。结论中国2017—2018年流感暴发疫情主要集中于秋冬季,南方是流感样病例暴发疫情报告的高发地区;中小学和幼托机构是暴发疫情的高发场所,引起暴发疫情的主要病原是B型流感。
Objective To analyze epidemiological characteristics of influenza-like illness outbreaks in China's Mainland during 2017-2018 surveillance season,and to provide scientific evidence for developing influenza prevention and control strategies.Methods We collected the data on reported influenza outbreaks in 2017-2018 surveillance season from China Influenza Surveillance Information System and China Public Health Emergency Management Information System and analyzed the data of laboratory-confirmed influenza-like illness outbreaks by descriptive epidemiological methods.Results During the surveillance season,a total of 2398 influenza-like illness outbreaks(with 10 or more incidences in an outbreak)in China's Mainland were reported,involving 87084 patients,of which 2323 were influenza outbreaks,involving 85531 patients.The reported influenza-like illness outbreaks occurred most frequently from November 2017 to January 2018 in both the southern and northern regions and the highest peaks were in December 2017.During the period 1850 influenza-like illness outbreaks(77.15%)were reported in the southern region,and 548 influenza-like illness outbreaks(22.85%)were reported in the northern region.The most of the outbreaks occurred in primary,secondary schools and nursery care schools,with a total of 2210 reports(92.16%).And the majority of the outbreaks involved 10-29 incident cases.The dominant isolated virus strains for the outbreaks were influenza B(1505 outbreaks,62.76%of all the outbreaks).Conclusion Seasonality of influenza outbreaks were observed in China's Mainland during 2017-2018 surveillance season and the reported influenza outbreaks were most frequently occurred in autumn-winter season and in southern China.Primary,secondary schools and nursery care schools are high-risk places for outbreaks,and the dominant isolated virus strains for the outbreaks were influenza B.
作者
刘丽军
杨静
祝菲
汪立杰
郭倩
唐静
房琼琼
王大燕
陈涛
Liu Lijun;Yang Jing;Zhu Fei;Wang Lijie;Guo Qian;Tang Jing;Fang Qiongqiong;Wang Dayan;Chen Tao(Chinese National Influenza Center,National Institute for Viral Disease Control and Prevention,Chinese Center for Disease Control and Prevention,Key Laboratory for Medical Virology,National Health,Beijing 102206,China)
出处
《中华预防医学杂志》
CAS
CSCD
北大核心
2019年第10期982-986,共5页
Chinese Journal of Preventive Medicine
关键词
流感
人
疾病暴发流行
疾病特征
Influenza
human
Pandemics
Disease attributes
