2014-2019年度眉山市流感样病例病原学监测结果分析  

The Pathogenic Surveillance Results of Influenza-like Cases in Meishan City From 2014 to 2019

作　　者：叶文碧 黎勇[2] 郑灵媚 胡海[1] 余杰 YE Wenbi;LI Yong;ZHENG Lingmei;HU Hai;YU Jie(Renshou County Center for Disease Control and Prevention,Renshou 620599,Sichuan Province,China;Meishan City Center for Disease Control and Prevention,Meishan 620000,Sichuan Province y China)

机构地区：[1]仁寿县疾病预防控制中心,四川仁寿620599 [2]眉山市疾病预防控制中心,四川眉山620000

出　　处：《寄生虫病与感染性疾病》2020年第2期70-74,共5页Parasitoses and Infectious Diseases

摘　　要：目的了解眉山市流感流行特征和流感病毒优势株的变化,为流感的防控提供科学依据。方法通过国家流感监测系统,收集2014-2019年度眉山市流感样病例监测数据和实验室病原学检测数据,分析流感流行特征。结果2014-2019年度眉山市共报告ILI数为62967例,占门急诊病例总数的2.22%。各监测年度ILI%依次为2.15%、2.19%、1.79%、2.33%和2.57%。ILI发病以0~4岁组人群最多(75.68%),其次为5~14岁组(21.65%),最少的是≥60岁组(0.29%)。ILI%和流感病毒核酸检测阳性率随时间变化均呈现出夏季和冬春季流行高峰特征。2014-2017年度,眉山市主要以季节性H3型流感病毒为优势毒株;在2017-2019年度,则以新甲型H1型流感病毒伴B型Yamagata系或Victoria系交替流行。结论眉山市流感样病例发病呈现逐年上升趋势,有夏季和冬春季2个发病高峰。15岁以下人群为发病重点人群,流感病毒优势株季节性H3型流感病毒转变为新甲型H1型流感病毒和乙型流感病毒。Object To understand the epidemic characteristics of influenza-like cases in Meishan City and the changes of dominant strains of influenza virus from 2014 to 2019 so as to provide a scientific basis for the prevention and control of influenza.Methods Surveillance data of influenzalike cases and laboratory pathogen detection in Meishan City from 2014 to 2019 were collected from the National Influenza Surveillance System to analyze influenza epidemic characteristics.Result In 2014-2019,a total of 62767 were reported ILI cases in Meishan City,accounting for 2.22%of the total number of outpatient and emergency cases.The proportion of ILI cases was 2.15%,2.19%,1.79%,2.33%,and 2.57%from 2014 to 2019.The proportion of ILI cases was highest in the 0 to 4 year old group(75.68%),followed by the 5 to 14 year old group(21.65%),and the lowest proportion was the≥60 year old group(0.29%).The percentage of ILI cases and thepositive rate of influenza virus nucleic acid detection reached peak in summer,winter and s p r i n g o v e r t i m e.I n 2014-2017,s e a s o n a linfluenza H3 virus was the dominant strain in Meishan City,whereas the new influenza A virus H1 with Yamagata or Victoria strains of type B was circulating in 2017-2019.Conclusion The incidence of influenza-like cases has been increasing yearly in Meishan City,with peaks in summer,winter and spring.The population under the age of 15 years is the key population.The dominant strains of seasonal influenza H3 virus and influenza virus have changed to the new influenza A H1 virus and the influenza B virus,respectively.

关 键 词：流感样病例 病原学检测 监测 

分 类 号：R373.13[医药卫生—病原生物学]