2011—2015年吉林省流行性感冒监测分析

Analysis of surveillance data of influenza in Jilin Province from 2011 to 2015

目的通过分析流行性感冒（流感）监测数据，掌握流感的流行特征．为我省有效应对流感大流行，制定流感防控策略提供科学依据。方法对2011．2015年流感监测资料进行描述性分析。结果2011年14周-2015年13周吉林省流感监测哨点医院平均流感样病例f叫）就诊百分比为2．01％。ILI最高的年龄组为0—4岁。13家哨点医院共分离出阳性毒株2173份，阳性分离率为8．28％。其中主要的三种病毒型别分别为：季节性A（H3N2）45．24％，甲型（H1N1）32．31％．B型22．14％。不同监测年度的优势毒株变化明显，2011-2012监测年度主要的优势毒株是B型，2012—2014两个监测年度优势毒株为H3N2和H1N1，2014-2015监测年度主要的优势毒株是H3N2。结论吉林省流感流行的季节性特征较为明显，不同监测年份优势毒株交替出现。

Objective Through the analysis of influenza （Flu） monitoring data, to grasp the epidemiological characteristics of influenza, effective response to influenza pandemic in our province, to provide scientific basis for the development of influenza prevention and control strategies. Methods To analyze the surveillance data of influenza from 2011 to 2015. Results From the 14th week of 2011 to the 13th week of 2015, the average percentage of influenza-like illness （ILI）visits （ILI%） was 2.01% in Jilin province. The age group of 0 to 4 was the highest in the age groups of ILI cases. 2173 positive strains were isolated from 13 sentinel hospitals, and the positive rate was 8.28%. The main three viral types were： seasonal A （H3N2） 45.24% , A （ H1N1 ） 32. 31% , B 22. 14%. The dominant strains in different monitoring years were significantly different, the dominant strains of 2011-2012 was B while 2012-2014 were H3N2 and H1N1, the dominant strains of 2014-2015 was H3N2. Conclusion The seasonal characteristics of influenza in Jilin province were obvious, and the dominant strains in different monitoring years appeared alternately.