Prevalence of GII.4 Sydney 2012 and Recombinant GII.3P[12] Noroviruses Associated with Acute Gastroenteritis in Hospitalized Children in Thailand, 2015-2017

Manowong, Areerat; Chanta, Chulapong; Chan-it, Wisoot

doi:10.48022/mbl.2109.09001

Cited by 1 publication

(1 citation statement)

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“…We also analyzed the amino acid substitutions of the predicted epitopes or HBGA binding sites of GⅡ.3 and GⅡ.17 strains (Supporting Information Material S1: Figure 1). Compared with the GⅡ.3 strain (ZS-GD/2016), no amino acid mutation existed in the predicted epitope and HBGA binding sites (Ⅰ, Ⅱ, Ⅲ) 33,34 in our GⅡ.3 genomes. Compared with the GⅡ.17 strain (Kawasaki308/2015), our GⅡ.17 sequences displayed three amino acids mutations (positions E293Q, D297N, H298Q) in predicted epitope Ⅱ.…”

Section: Wgs and Phylogenetic Analysismentioning

confidence: 79%

Molecular epidemiology and genetic diversity of norovirus among hospitalized patients with acute gastroenteritis in Shandong, China, 2016–2018

Li,

Song,

Huang

et al. 2023

Journal of Medical Virology

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Norovirus (NoV) infection is a leading cause of acute gastroenteritis (AGE) for people of all ages. Here, we reported the molecular epidemiology and genetic diversity of NoVs among hospitalized patients with AGE between 2016 and 2018 in Shandong Province, China. Two thousand sixty‐nine AGE patients from sentinel hospitals were enrolled. The stool samples were collected and tested for NoVs by real‐time RT‐PCR. The RNA‐dependent RNA polymerase (RdRp) and capsid gene of 163 strains were amplified and sequenced for genotyping. Phylogenetic analyses and genomic characterization were conducted with the VP1 and RdRp region of the full genome sequences. Four hundred seventy two (21.76%) samples were NoV‐positive. The positive rate in 2016 was higher than those of 2017 and 2018. We observed diverse NoV genotypes. GII.2[P16] emerged in January 2017 and became the dominant genotype between May and June 2017. Phylogenetic analyses showed that our GII.2[P16] genomes clustered in the SC1 in VP1 region, while they belonged to the Emerging GⅡ.P16 (2015−2017) clade in RdRp region. Our GⅡ.4 strains displayed two amino acid mutations, positions R297H and D372N, in epitope A of the VP1 region. Our study highlighted that NoV is an important pathogen of viral AGE in Shandong and, therefore, it is necessary to strengthen its surveillance.

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Section: Wgs and Phylogenetic Analysismentioning

confidence: 79%