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  1. Risk assessment of Campylobacter species in shellfish : Identifying the unknown.

    Article, Communication - En anglais

    IAWQ international symposium on health-related water microbiology. Mallorca (ESP), 1996/10/06.

    Shellfish are frequently contaminated by Campylobacter spp, presumably originating from faeces from gulls feeding in the growing or relaying waters.

    The possible health effects of eating contaminated shellfish were estimated by quantitative risk assessment.

    A paucity of data was encountered necessitating many assumptions to complete the risk estimate.

    The level of Campylobacter spp in shellfish meat was calculated on the basis of a five-tube, single dilution MPN and was strongly season-dependent.

    The contamination level of mussels (

    The usual steaming process of mussels was found to completely inactivate Capylobacter spp so that risks are restricted to raw/undercooked shellfish.

    Consumption data were estimated on the basis of the usual size of a portion of raw shellfish and the weight of meat/individual animal.

    Using these data, season-dependent dose-distributions could be estimated.

    The dominant species in Dutch shellfish is C. lari but little is known on its infectivity for man.

    As a worst case assumption, it was assumed that the infectivity was similar to C. jejuni.

    A published dose-response model for Campylobacter-infection of volunteers is available but with considerable uncertainty in the low dose region.

    Using Monte Carlo simulation, risk estimates were constructed.

    The consumption of a single portion of raw shellfish resulted in a risk of infection of 5-20% for mussels (depending on season ; 95% Cl 0.01-60%). (...)

    Mots-clés Pascal : Pollution eau, Eau mer, Mollusque et crustacé, Campylobacter, Campylobacteraceae, Bactérie, Analyse risque, Contamination biologique, Alimentation

    Mots-clés Pascal anglais : Water pollution, Seawater, Shellfish, Campylobacter, Campylobacteraceae, Bacteria, Risk analysis, Biological contamination, Feeding

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0511697

    Code Inist : 001D16A04D. Création : 13/02/1998.