Original Article
Molecular epidemiology of norovirus among infants with diarrhea in Chaoyang district, Beijing from 2011 to 2017
Yang Jiao, Furong He, Yan Gao, Xiao Qi, Shiyao Zhang, Lin Gu, Yusong Zhang, Jianhong Zhao, Yue Zhang, Shen Ge, Jialiang Du, Lingli Sun
Published 2019-04-28
Cite as Chinese J Exp Clin Virol, 2019, 33(2): 125-130. DOI: 10.3760/cma.j.issn.1003-9279.2019.02.003
Abstract
ObjectiveTo investigate the genetic characteristics of human norovirus (NoV) among infants under 5 years of age with diarrhea in Chaoyang District, Beijing from 2011 to 2017.
MethodsNoV-positive stool samples were collected from 2011 to 2017 in this region. The partial RdRp and VP1 genes were amplified and sequenced. Multi-sequence alignment was performed and phylogenetic tree was constructed using Mega software.
ResultsA total of 151 samples were sequenced and analyzed. The ratio of male and female was 2.28∶1 with mean age of 1.72 years. Fourteen NoV subtypes were detected, including GII.Pe/GII.4 (47.68%), GII.P12/GII.3 (20.53%), GII.P4/GII.4 (17.22%), GII.P16/GII.2 (3.31%), GII.P12/GII.12 (1.99%), GII.P17/GII.17 (1.99%), GII.P16/GII.13 (1.32%), GII.P7/GII.7 (1.32%), GII.P7/GII.6 (1.32%), GII.P2/GII.2 (0.66%), GII.P21/GII.21 (0.66%), GII.Pg/GII.12 (0.66%), GI.Pa/GI.3 (0.66%) and GI.P6/GI.6 (0.66%).
ConclusionsNoV genetic diversity was found among infants under 5 with diarrhea in Chaoyang district, Beijing. The subtypes from surveillance and those from epidemics occurred in chronological order. The surveillance should be strengthened for early detection of new subtype for monitoring the epidemic and vaccine design.
Key words:
Norovirus; Viral diarrhea; Genotype; Phylogenetic analysis
Contributor Information
Yang Jiao
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Furong He
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Yan Gao
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Xiao Qi
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Shiyao Zhang
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Lin Gu
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Yusong Zhang
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Jianhong Zhao
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Yue Zhang
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Shen Ge
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China
Jialiang Du
Institute for Biological Products Control, National Institutes for Food and Drug Control, Beijing 102629, China
Lingli Sun
Microbiology Laboratory, Beijing Chaoyang District Centre for Disease Control and Prevention, Beijing 100021, China