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Five-Year Molecular Surveillance Reveals Widespread Foodborne Enteric Viruses in Bivalve Mollusks From Golfo Nuevo, Argentina

The present investigation conducted a 5-year longitudinal survey (August 2018–March 2023) of enteric viruses in bivalve mollusks (n = 390) collected from Golfo Nuevo, Puerto Madryn, Argentina. Samples were processed following ISO 15216-1:2017 guidelines. Norovirus genogroups I/II (NoV GI/GII), rotav...

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Autores principales: Frydman, Camila Ayelén, Miño, Samuel, Barbieri, Elena Susana, Galeano, Fabiana Solange, Vaudagna, Sergio Ramon, Parreño, Gladys Viviana, Mozgovoj, Marina Valeria
Formato: info:ar-repo/semantics/artículo
Lenguaje:Inglés
Publicado: Institute of Food Technologists (IFT) 2025
Materias:
Viruses
Shellfish
Mollusca
Bivalvia
Food Contamination
Virus
Argentina
Marisco
Bivalvo
Contaminación Alimentaria
Molecular Surveillance
Vigilancia Molecular
Acceso en línea:http://hdl.handle.net/20.500.12123/24151
https://ift.onlinelibrary.wiley.com/doi/10.1111/1750-3841.70573
https://doi.org/10.1111/1750-3841.70573
Sumario:The present investigation conducted a 5-year longitudinal survey (August 2018–March 2023) of enteric viruses in bivalve mollusks (n = 390) collected from Golfo Nuevo, Puerto Madryn, Argentina. Samples were processed following ISO 15216-1:2017 guidelines. Norovirus genogroups I/II (NoV GI/GII), rotavirus A (RVA), hepatitis A (HAV) and E (HEV) viruses, and adenovirus (AdV) were detected and quantified by RT-qPCR/qPCR, genotyped, and subjected to phylogenetic analysis. At least one virus was detected in 40.7% of composite samples. AdV exhibited the highest prevalence (56.6%), while NoV GII and RVA were detected in 12.4% of samples; HEV and HAV were detected in 5.3% and 4.4%, respectively, and NoV GI was not detected. Mean viral loads ranged from 4.8 to 6.3 log10 genomic copies/g of bivalve mollusks. Temporal trends revealed a significant decline in detection post-pandemic for RVA, NoV GII, and HAV, while AdV and HEV rates remained stable. Genotyping identified pandemic variant NoV GII.4[P16], RVA G8P[1], HAV IA, and AdV A31. These results provide the first comprehensive baseline of enteric virus contamination in Patagonian shellfish. Routine virus monitoring and evidence-based control measures are therefore imperative to safeguard public health and to align Argentine bivalve mollusks with international safety standards.

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