Objective To preliminarily explore microbial quantitative risk assessment of Vibrio parahaemolyticus related disease by means of simulated consumption of Portunus trituberculatus.
Methods In accordance with risk assessment procedures recommended by the Codex Alimentarius Commission (CAC), including hazard identification, hazard characterization, exposure assessment and risk characterization, combining with the results of exposure assessment model and β-Poisson doseresponse model, the risk of disease caused by crab consumption contaminated with V. parahaemolyticus was speculated.
Results The risks caused by crab consumption contaminated with V. parahaemolyticus were 5.86& #215;10-9 in winter, 2.71& #215;10-8 in spring, 1.46& #215;10-6 in summer, and 5.23& #215;10-8 in autumn separately. Sensitivity analysis showed that storage temperature and V. parahaemolyticus concentration of crab on sale and other factors significantly correlated to the risk of the disease. When some control measures were taken, such as to reduce the retail storage temperature, and to extend the post-sales frozen time could significantly reduce the incidence of the diseases.
Conclusion This study as an application of research on risk analysis in food-borne diseases surveillance, is a technical reference for the quantitative risk assessment.
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