Surveillance analysis of influenza Etiological in Xuzhou from 2010 to 2015
10.3760/cma.j.issn.1003-9279.2016.06.011
- VernacularTitle:2010-2015年徐州市流行性感冒病原学监测分析
- Author:
Yangguang DU
1
;
Jinchuan YANG
;
Jing TONG
;
Weiwei WU
;
Lei ZHANG
;
Liuying TANG
Author Information
1. 221006,徐州市疾病预防控制中心
- Keywords:
Influenza;
Molecular detection;
Virus isolation;
Outbreak
- From:
Chinese Journal of Experimental and Clinical Virology
2016;30(6):546-548
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the prevalence,subtypes and infected population of influenza (flu) viruses in Xuzhou city from 2010 to 2015,providing scientific supports for influenza prevention and control.Methods Molecular detection and virus isolation were carried out with the throat swab samples collected from influenza-like illness(ILI) cases of national sentinel hospitals and the flu outbreaks.Results The influenza has obvious epidemic characteristics seasonally,two concentrated outbreaks in every December to next March and August to September.The positive rates were different among age groups,the highest was in less than ten years old group (64.36％),then 10-19 years old group (10.69％),and the lowest was in 50-59 years old group (3.77％).A total of 15 245 swab specimens were collected in which 1 459 strains were detected and identified for influenza viruses with total positive rate of 9.57％.Among these positive samples,593 samples were H3 subtype (40.64％),627 samples were B subtype (42.97％),237 samples were H1 N1 subtype (16.24％).Four hundred and fouty strains were isolated fromMDCK cells the relatively isolate rate was 30.16 ％ (440/1 459),fifty nine strains from embryonated chicken (13.78％).Conclusions The epidemic types of influenza in Xuzhou from 2010 to 2015 were alternation between H3 and B.There were epidemic peaks of H1N1occurred occasionally and unstably.
