ArticleEFSA journal. European Food Safety Authority2019
Analysis of the European baseline survey of norovirus in oysters.
Article in EFSA journal. European Food Safety Authority, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed.
- How Wastewater Monitoring is Helping to Investigate a Hepatitis A Outbreak Linked to Oysters' Consumption.Food and environmental virology · 2026Article
- Evaluation of two virome probe hybridization capture panels for food safety surveillance.Virology journal · 2026Article
- Genomic diversity and comparative phylogenomic analysis of genus Norovirus.Scientific reports · 2025Article
- Long-Term Surveillance of Food Products of Diverse Origins: A Five-Year Survey of Hepatitis A and Norovirus in Greece, 2019-2024.Pathogens (Basel, Switzerland) · 2025Article
- The Prevalence of Enteric Viruses in Bivalve Molluscs in a Farming Area in Liguria, Northwest Italy.Pathogens (Basel, Switzerland) · 2024Article
- A comprehensive RNA virome identified in the oyster Magallana gigas reveals the intricate network of virus sharing between seawater and mollusks.Microbiome · 2024Article
- Leveraging Plasma-Activated Seawater for the Control of Human Norovirus and Bacterial Pathogens in Shellfish Depuration.Foods (Basel, Switzerland) · 2024Article
- Presence of Enteric Viruses in Shellfish Samples from the Persian Gulf.Archives of Razi Institute · 2024Article
- A Comprehensive Review for the Surveillance of Human Pathogenic Microorganisms in Shellfish.Microorganisms · 2023Review
- Temperature Dependent Depuration of Norovirus GII and Tulane Virus from Oysters (Crassostrea gigas).Food and environmental virology · 2023Article
- Exploring the Astrovirome of Shellfish Matrices Using Nanopore Sequencing.Veterinary sciences · 2023Article
- Evaluating the transmission risk of SARS-CoV-2 from sewage pollution.The Science of the total environment · 2023Article
- Study on the Effect of Relaying on Norovirus Reduction fromMicroorganisms · 2022Article
- Detection of Hepatitis A Virus and Norovirus in Different Food Categories: A 6-Year Survey in Italy.Food and environmental virology · 2022Article
- European legislation and live bivalve molluscs: Are the criteria for microbiological safety matching with the criteria for sanitary classification of harvesting areas?Italian journal of food safety · 2022Article
- Assessment of the Impact on Human Health of the Presence of Norovirus in Bivalve Molluscs: What Data Do We Miss?Foods (Basel, Switzerland) · 2021Review
- Development of an RNA Extraction Protocol for Norovirus from Raw Oysters and Detection by qRT-PCR and Droplet-Digital RT-PCR.Foods (Basel, Switzerland) · 2021Article
- Norovirus Persistence in Oysters to Prolonged Commercial Purification.Pathogens (Basel, Switzerland) · 2021Article
- Can shellfish be used to monitor SARS-CoV-2 in the coastal environment?The Science of the total environment · 2021Article
- Investigation of F-RNA Bacteriophage as a Tool in Re-Opening Australian Oyster Growing Areas Following Sewage Spills.Food and environmental virology · 2021Article
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Authors and funding
1 author.
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Abstract
The European Commission requested scientific technical assistance for the analysis of a European Union coordinated monitoring programme on the prevalence of norovirus in raw oysters. A total of 2,180 valid samples were taken from production areas and 2,129 from dispatch centres, taken over two consecutive years, ensuring the precision and the confidence desired in the estimation. The prevalence at production areas was estimated to be 34.5% (CI: 30.1-39.1%), while for batches from dispatch centres it was 10.8% (CI: 8.2-14.4%). The analyses show a strong seasonal effect, with higher contamination in the period November to April, as well as lower contamination for Class A areas than other classes. These associations were observed in both production areas and batches from dispatch centres. The results for both genogroups were above the respective limit of quantification (LOQ) in less than 10% of the samples taken. The simple substitution of not-detected and positive samples below the LOQ, by half of the limit of detection and half of the LOQ, respectively, produced estimates of the proportion of samples above or equal to 300 copies per gram (cpg) comparable to the statistical model. The current bacteriological microbiological criteria applicable to live bivalve molluscs might be complemented by a norovirus criterion. The analyses of the substitution approach show that selection of a potential limit within a microbiological criterion close to or lower than the LOQ (for example, less than 300 cpg, given the current test used in this survey) would be difficult to apply. This survey only assessed thresholds from the perspective of the analytical capability and not that of human health risk.
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