ArticleViruses2024
Epidemiological Features of Human Norovirus Genotypes before and after COVID-19 Countermeasures in Osaka, Japan.
Article in Viruses, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 10 citations in OpenAlex.
- Molecular characterization of a rare norovirus GII.8[P8] strain detected during pediatric acute gastroenteritis surveillance in Harbin, China.Virus genes · 2026Article
- Global trends in norovirus genotype distribution among medically attended children with acute gastroenteritis, 2020-2025.Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology · 2026Article
- Phylogenetic Analyses ofMicroorganisms · 2026Article
- Clinical, Molecular and Evolutionary Characterization of Noroviruses in Hospitalized Children With Acute Gastroenteritis in Vietnam, 2016 to 2021.Journal of medical virology · 2026Article
- Molecular Surveillance and Genotypic Distribution of Rotavirus A, Norovirus GI and GII in Bangkok Wastewater Treatment Plants During COVID-19 Phase in 2023, Thailand.Food and environmental virology · 2025Article
- Article
- Emergence of norovirus GII.17[P16] in adult patients with acute gastroenteritis in Thailand during 2021-2023.PloS one · 2025Article
- Global burden and trends of norovirus-associated diseases from 1990 to 2021 an observational trend study.Frontiers in public health · 2024Observational
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
Abstract
We investigated the molecular epidemiology of human norovirus (HuNoV) in all age groups using samples from April 2019 to March 2023, before and after the COVID-19 countermeasures were implemented. GII.2[P16] and GII.4[P31], the prevalent strains in Japan before COVID-19 countermeasures, remained prevalent during the COVID-19 pandemic, except from April to November 2020; in 2021, the prevalence of GII.2[P16] increased among children. Furthermore, there was an increase in the prevalence of GII.4[P16] after December 2022. Phylogenetic analysis of GII.P31 RdRp showed that some strains detected in 2022 belonged to a different cluster of other strains obtained during the present study period, suggesting that HuNoV strains will evolve differently even if they have the same type of RdRp. An analysis of the amino acid sequence of VP1 showed that some antigenic sites of GII.4[P16] were different from those of GII.4[P31]. The present study showed high infectivity of HuNoV despite the COVID-19 countermeasures and revealed changes in the prevalent genotypes and mutations of each genotype. In the future, we will investigate whether GII.4[P16] becomes more prevalent, providing new insights by comparing the new data with those analyzed in the present study.
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