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Published in: BMC Infectious Diseases 1/2019

Open Access 01-12-2019 | Acute Gastroenteritis | Research article

Prevalence of noroviruses in children hospitalized for acute gastroenteritis in Hohhot, China, 2012-2017

Authors: Hui-ying Li, Yu-geng Zhang, Xia Lei, Jian Song, Zhao-jun Duan

Published in: BMC Infectious Diseases | Issue 1/2019

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Abstract

Background

Noroviruses (NVs) are an important cause of acute gastroenteritis (AGE) worldwide. There are limited data on the prevalence and molecular characterization of NVs in children in Hohhot, China.

Methods

Between January 2012 and December 2017, 1863 stool samples were collected at Maternal and Child Health Hospital in Hohhot. All samples were screened for NVs by real-time reverse transcription polymerase chain reaction (real-time RT-PCR).

Results

NVs were detected in 24.15% of these inpatient cases, ranging from 12.78 to 32.92% in different years. NV was detected throughout the year, with a peak in winter. Based on sequence analysis of the partial VP1 gene, the 306 identified NV strains were divided into six genotypes: GII.3 (71.24%), GII.4 (23.53%), and GII.2, GII.5, GII.6, and GII.13 (total 5.23%). Based on further sequence analysis of the RNA-dependent RNA polymerase (RdRp), GII.P12/GII.3, GII.Pe/GII.4, and GII.P4/GII.4 were identified as predominant genotypes, accounting for 92.6% of genotyped strains. The median age of the children with NV infection was 8.0 (range 0–59) months. However, children infected with GII.3 were younger (median 7.0 months) than GII.4-positive patients (median 10.0 months).

Conclusion

NV contributed greatly to AGE among hospitalized children in Hohhot in China. Continuous surveillance is important for understanding the local prevalence and characterization of NV.
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Metadata
Title
Prevalence of noroviruses in children hospitalized for acute gastroenteritis in Hohhot, China, 2012-2017
Authors
Hui-ying Li
Yu-geng Zhang
Xia Lei
Jian Song
Zhao-jun Duan
Publication date
01-12-2019
Publisher
BioMed Central
Published in
BMC Infectious Diseases / Issue 1/2019
Electronic ISSN: 1471-2334
DOI
https://doi.org/10.1186/s12879-019-4230-x

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