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Consumer Phase Risk Assessment for Listeria monocytogenes in Deli Meats

机译：熟食肉类中李斯特菌的消费者阶段风险评估

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The foodborne disease risk associated with the pathogen Listeria monocytogenes has been the subject of recent efforts in quantitative microbial risk assessment. Building upon one of these efforts undertaken jointly by the U.S. Food and Drug Administration and the U.S. Department of Agriculture (USDA), the purpose of this work was to expand on the consumer phase of the risk assessment to focus on handling practices in the home. One-dimensional Monte Carlo simulation was used to model variability in growth and cross-contamination of L. monocytogenes during food storage and preparation of deli meats. Simulations approximated that 0.3% of the servings were contaminated with > 10~4 CFU/g of L. monocytogenes at the time of consumption. The estimated mean risk associated with the consumption of deli meats for the intermediate-age population was approximately 7 deaths per 10~(11) servings. Food handling in homes increased the estimated mean mortality by 10~6-fold. Of all the home food-handling practices modeled, inadequate storage, particularly refrigeration temperatures, provided the greatest contribution to increased risk. The impact of cross-contamination in the home was considerably less. Adherence to USDA Food Safety and Inspection Service recommendations for consumer handling of ready-to-eat foods substantially reduces the risk of listeriosis.
机译：与单核细胞增生李斯特氏菌病原体相关的食源性疾病风险已成为定量微生物风险评估的最新课题。在美国食品药品监督管理局和美国农业部（USDA）共同采取的这些努力之一的基础上，这项工作的目的是扩大风险评估的消费者阶段，重点是在家中处理操作。一维蒙特卡洛模拟用于在食品储存和熟食肉制备过程中对单核细胞增生李斯特氏菌的生长和交叉污染进行建模。模拟结果表明，食用时约有0.3％的食物被> 10〜4 CFU / g单核细胞增生李斯特菌污染。与中年人食用熟食有关的估计平均风险为每10〜（11）份中约有7人死亡。在家中处理食物会使估计平均死亡率增加10到6倍。在所有建模的家庭食物处理方式中，存储不足，尤其是冷藏温度不足，对增加风险做出了最大贡献。交叉污染对家庭的影响要小得多。遵守美国农业部食品安全与检验服务局关于消费者处理即食食品的建议，可以大大降低李斯特菌病的风险。

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