ArticleApplied and environmental microbiology2009
Prevalence and genotypes of human noroviruses in tropical urban surface waters and clinical samples in Singapore.
Article in Applied and environmental microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed.
- COVID-19 surveillance in wastewater: An epidemiological tool for the monitoring of SARS-CoV-2.Frontiers in cellular and infection microbiology · 2022Review
- NGS Techniques Reveal a High Diversity of RNA Viral Pathogens and Papillomaviruses in Fresh Produce and Irrigation Water.Foods (Basel, Switzerland) · 2021Article
- The novel SARS-CoV-2 pandemic: Possible environmental transmission, detection, persistence and fate during wastewater and water treatment.The Science of the total environment · 2021Review
- Pairing of Parental Noroviruses with Unequal Competitiveness Provides a Clear Advantage for Emergence of Progeny Recombinants.Applied and environmental microbiology · 2021Article
- Occurrence of microbial indicators, pathogenic bacteria and viruses in tropical surface waters subject to contrasting land use.Water research · 2019Article
- Comprehensive Study on Enteric Viruses and Indicators in Surface Water in Kyoto, Japan, During 2014-2015 Season.Food and environmental virology · 2018Article
- Geospatial distribution of viromes in tropical freshwater ecosystems.Water research · 2018Article
- Microfluidic PCR Amplification and MiSeq Amplicon Sequencing Techniques for High-Throughput Detection and Genotyping of Human Pathogenic RNA Viruses in Human Feces, Sewage, and Oysters.Frontiers in microbiology · 2018Article
- Evaluation of real-time RT-PCR assays for detection and quantification of norovirus genogroups I and II.Virologica Sinica · 2017Article
- Occurrence of novel GII.17 and GII.21 norovirus variants in the coastal environment of South Korea in 2015.PloS one · 2017Article
- Concurrent Detection of Human Norovirus and Bacterial Pathogens in Water Samples from an Agricultural Region in Central California Coast.Frontiers in microbiology · 2017Article
- Alternative fecal indicators and their empirical relationships with enteric viruses, Salmonella enterica, and Pseudomonas aeruginosa in surface waters of a tropical urban catchment.Applied and environmental microbiology · 2015Article
- Norovirus contamination levels in ground water treatment systems used for food-catering facilities in South Korea.Viruses · 2013Article
- An outbreak of norovirus gastroenteritis associated with a secondary water supply system in a factory in south China.BMC public health · 2013Article
- Diverse norovirus genotypes identified in sewage-polluted river water in South Africa.Epidemiology and infection · 2013Article
- A review of known and hypothetical transmission routes for noroviruses.Food and environmental virology · 2012Review
- Occurrence of hand-foot-and-mouth disease pathogens in domestic sewage and secondary effluent in Xi'an, China.Microbes and environments · 2012Article
- Concentration and diversity of noroviruses detected in Luxembourg wastewaters in 2008-2009.Applied and environmental microbiology · 2011Article
- Validation of internal controls for extraction and amplification of nucleic acids from enteric viruses in water samples.Applied and environmental microbiology · 2011Article
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The prevalence and genotypes of norovirus genogroup I (GI) and GII in tropical urban catchment waters and an estuarine bay were studied. A comparative analysis was performed with environmental isolates of noroviruses and concurrently identified clinical isolates in Singapore during gastroenteritis outbreaks between August 2006 to January 2007. Noroviruses in environmental water samples were concentrated by using ultrafiltration techniques and then analyzed by reverse transcription-seminested PCR assay targeting the partial capsid region of noroviruses and DNA sequencing. Among the 60 water samples collected, noroviruses were detected in 43 (71.7%) of these samples. Of these 43 norovirus-positive samples, the coexistence of both GI and GII strains was identified in 23 (53.5%) water samples. The phylogenetic analysis revealed multiple genotypes of noroviruses GI and GII in environmental water samples. GI and GII strains were clustered into seven and nine (including two unclassified) genotypes, respectively. The major norovirus genotypes in environmental water samples were GI/2 and GI/4 and GII/4. Genotyping of the 21 norovirus-positive clinical samples showed that all of the strains belonged to the GII/4 cluster. The environmental and clinical norovirus GII/4 isolates showed high levels of nucleotide sequence identity to each other and to the novel GII/4 variant associated with global epidemics of gastroenteritis during 2006. This study suggests the emergence and circulation of multiple novel norovirus GI and GII genotypes in water environments. Further comprehensive surveillance of water environments for noroviruses and routine clinical reporting is warranted.
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