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Analysis of epidemiology characteristics of norovirus among diarrheal outpatients in 27 provinces in China, 2009-2013

Yu, Jianxing, Lai, Shengjie, Wang, Xin, Liao, Qiaohong, Feng, Luzhao, Ran, Lu, Xu, Wenbo, Qiu, Yanzi, Zhang, Zike, Li, Mengfeng, Wu, Jianguo, Liu, Wei, Yan, Zhenghong, Chen, Yu, Zhao, Shiwen, Wang, Xinhua, Zhao, Zhuo, Yu, Hongjie, Jing, Huaiqi, Li, Zhongjie and Yang, Weizhong (2015) Analysis of epidemiology characteristics of norovirus among diarrheal outpatients in 27 provinces in China, 2009-2013 Chinese Journal of Epidemiology, 36, (3), pp. 199-205. (doi:10.3760/cma.j.issn.0254-6450.2015.03.003).

Record type: Article


Objective: to investigate the epidemiology characteristics of norovirus among diarrheal outpatients in China.

Methods: diarrhea cases were monitored at emergency/outpatient departments at 173 hospitals in 27 provinces of China,with clinical and epidemiological data,and fecal specimens collected and sent to 58 network-laboratories to detect norovirus by RT-PCR method,and to analyze the positive rate of norovirus in various regions,population and time during 2009-2013.

Results: 11.6? of the 34 031 diarrheal cases under surveillance were found with norovirus.Age group of 6-23 month-old children and that of people over 45 years old were found with the highest positive percentage,13.7? and 12.4? respectively.Positive percentage of norovirus peaks in autumn and winter in a year; it peaks in mid-temperate zones (10.7?) and warm-temperate zones (11.6?) in winter.It peaks in sub-tropical zones in autumn (14.3?).The most prevalent genogroups detected were norovirus G ?,accounting for 89.9? of identified strains.

Conclusion: norovirus affects all ages and was most prevalent in children and the elderly among diarrhea outpatients.Norovirus' positive percentage showed strong seasonal pattern,and peaks at different times of a year in different climate zones of China.Since no effective preventive measures existed,further study on norovirus epidemiology and intervention strategies should be conducted in future

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Published date: March 2015
Organisations: WorldPop, Population, Health & Wellbeing (PHeW)


Local EPrints ID: 376728
ISSN: 0254-6450
PURE UUID: 5a827a9e-6572-4448-8154-ba338368c3cb
ORCID for Shengjie Lai: ORCID iD

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Date deposited: 08 May 2015 10:29
Last modified: 17 Jul 2017 21:06

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Author: Jianxing Yu
Author: Shengjie Lai ORCID iD
Author: Xin Wang
Author: Qiaohong Liao
Author: Luzhao Feng
Author: Lu Ran
Author: Wenbo Xu
Author: Yanzi Qiu
Author: Zike Zhang
Author: Mengfeng Li
Author: Jianguo Wu
Author: Wei Liu
Author: Zhenghong Yan
Author: Yu Chen
Author: Shiwen Zhao
Author: Xinhua Wang
Author: Zhuo Zhao
Author: Hongjie Yu
Author: Huaiqi Jing
Author: Zhongjie Li
Author: Weizhong Yang

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