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Cockles and mussels, alive, alive, oh - The role of bivalve molluscs as transmission vehicles for human norovirus infections
Razafimahefa, R.M.; Ludwig-Begall, L.F.; Thiry, E. (2020). Cockles and mussels, alive, alive, oh - The role of bivalve molluscs as transmission vehicles for human norovirus infections. Transboundary and Emerging Diseases 67(S2): 9-25. https://hdl.handle.net/10.1111/tbed.13165
In: Transboundary and Emerging Diseases. Wiley-Blackwell: Hoboken. ISSN 1865-1674; e-ISSN 1865-1682
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| Trefwoorden |
Bivalvia [WoRMS]
Marien/Kust |
| Author keywords |
bivalve molluscs; epidemiology; norovirus; outbreak; transmission; virus |
| Auteurs | | Top |
- Razafimahefa, R.M.
- Ludwig-Begall, L.F.
- Thiry, E.
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| Abstract |
Human noroviruses are recognized as the leading worldwide cause of sporadic and epidemic viral gastroenteritis, causing morbidity and mortality in impoverished developing countries and engendering enormous economic losses in developed countries. Transmitted faecal-orally, either via person-to-person contact, or by consumption of contaminated foods or water, norovirus outbreaks are often reported in institutional settings or in the context of communal dining. Bivalve molluscs, which accumulate noroviruses via filter feeding and are often eaten raw or insufficiently cooked, are a common food vehicle implicated in gastroenteritis outbreaks. The involvement of bivalve molluscs in norovirus outbreaks and epidemiology over the past two decades are reviewed. The authors describe how their physiology of filter feeding can render them concentrated vehicles of norovirus contamination in polluted environments and how high viral loads persist in molluscs even after application of depuration practices and typical food preparation steps. The global prevalence of noroviruses in bivalve molluscs as detected by different monitoring efforts is determined and the various methods currently utilized for norovirus extraction and detection from bivalve matrices described. An overview of gastroenteritis outbreaks affirmatively associated with norovirus-contaminated bivalve molluscs as reported in the past 18 years is also provided. Strategies for risk reduction in shellfish contamination and subsequent human infection are discussed. |
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