Influenza surveillance in Minhang District of Shanghai from 2013 to 2016
10.3969/j.issn.1672-8467.2017.05.024
- VernacularTitle:2013-2016年上海市闵行区流感监测结果分析
- Author:
zhen Cui LI
1
;
fei Ling LUO
;
jing Hong YAN
;
shan Shan ZHEN
;
guang Xiao WANG
Author Information
1. 上海市闵行区疾病预防控制中心 上海 201101
- Keywords:
influenza (flu);
influenza surveillance;
influenza like illness
- From:
Fudan University Journal of Medical Sciences
2017;44(5):685-689,692
- CountryChina
- Language:Chinese
-
Abstract:
Objective To understand the epidemic characteristics of influenza in Minhang District of Shanghai during 2013-2016,so as to provide scientific basis for the prevention and control of influenza.Methods Surveillance data of influenza like illness (ILI) cases from the national influenza network and data of pathogen detection during 2013-2016 in Minhang District were selected to analyze the epidemic characteristics of influenza.Results The number of influenza like illness (ILI) was 37 738 from 2013 to 2016,which accounted for 0.90% of the outpatients in monthly average.Meanwhile,4 094 samples were collected,among which 857 samples were virus positive.The total isolation rate was 20.93%.In 2013,the dominant strain was mainly seasonal influenza A (H3N2).Dominant strains of 2014 were influenza B (Yamagata) and seasonal influenza A (H3N2).In 2015,dominant strain was seasonal influenza A (H3N2) of summer peak,but the dominant strains of winter-spring peak were new type influenza H1N1 (H1N1 pdm09) and influenza B (Victoria) from December 2015 to April 2016.The dominant strain of winter peak in 2016 was seasonal influenza A (H3N2) popular.Spearman correlation analysis showed positive rate between ILI visiting rate (ILI%) and influenza virus (rs =0.460,P<0.05).Conclusions The epidemic peaks of of influenza were winter-spring and summer in Minhang District,advantages strains were interaction pandemic with certain regulation.The characteristics of ILI visiting rate was coincident with influenza virus activity.