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Updated: Jun 16, 2026

Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR
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Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR

Published on: July 22, 2012

Molecular characterization of astrovirus infection in children with diarrhea in Beijing, 2005-2007

Li Guo1, Xiwei Xu, Jingdong Song

  • 1State Key Laboratory of Molecular Virology and Genetic Engineering, Institute of Pathogen Biology, Chinese Academy of Medical Sciences, Beijing, China.

Journal of Medical Virology
|January 21, 2010
PubMed

Insights

Human astroviruses (HAstVs) cause childhood gastroenteritis. This study found HAstV-1 to be the dominant genotype in Beijing, China, providing crucial data for disease surveillance and control efforts.

Area of Science:

  • Virology
  • Gastroenterology
  • Public Health

Background:

  • Human astroviruses (HAstVs) are significant pathogens causing acute gastroenteritis in children globally.
  • Understanding the prevalence and genetic diversity of HAstVs is crucial for effective public health interventions.

Purpose of the Study:

  • To investigate the prevalence and genetic characteristics of human astroviruses in children with acute gastroenteritis in Beijing, China.
  • To identify the dominant HAstV genotypes circulating in the region.

Main Methods:

  • Collection of 664 fecal samples from children with acute gastroenteritis in Beijing (March 2005-November 2007).
  • Screening for all eight HAstV serotypes using RT-PCR assays targeting the ORF2 region.
  • Partial sequencing of HAstV strains (ORF1a, ORF2) and whole-genome sequencing for selected HAstV-1 strains.

Main Results:

  • Human astroviruses were detected in 7.8% (52/664) of the samples.
  • HAstV-1 was the predominant genotype, accounting for 50 of the 52 detected cases.
  • Minor genotypes HAstV-6 and HAstV-3 were also identified. High sequence homology was observed within HAstV-1 strains.
  • No evidence of recombination was found in the studied HAstV strains.

Conclusions:

  • HAstV-1 is the dominant genotype causing gastroenteritis in children in Beijing.
  • The genetic data provide essential baseline information for future HAstV surveillance and control strategies in China.
  • This study highlights the importance of molecular epidemiology in understanding viral disease burden.

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