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Risk assessment of Listeria monocytogenes in ready-to-eat foods. Interpretative Summary. Microbiological Risk Assessment Series (MRA) 4














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    Risk assessment of Listeria monocytogenes in ready-to-eat foods. Technical report. Microbiological Risk Assessment Series (MRA) 5 2004
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    Listeria monocytogenes is widely dispersed in the environment and foods, and is capable of growing even at refrigeration temperatures. Foodborne listeriosis, although relatively rare, is a clinically serious disease with a high case-fatality rate that largely affects specific higher-risk segments of the population. Cases of listeriosis appear to be predominately associated with ready-to-eat products. This volume addresses the risk of listeriosis associated with such foods. It has been prepar ed and reviewed by an international group of experts, with input from FAO/WHO expert consultations, the Codex Committee on Food Hygiene, and peer and public review. The sections in this volume include data and methodology relevant to the four steps of risk assessment – hazard identification, exposure assessment, hazard characterization and risk characterization – of Listeria monocytogenes in ready-to-eat foods. It includes four example risk assessments addressing the risk of listeriosis as sociated with fresh milk, ice cream, fermented meats and cold-smoked fish. These products were selected to represent typical classes of ready-to-eat products. This volume and others in this Microbiological Risk Assessment Series contain information that is useful to both risk assessors and risk managers, the Codex Alimentarius Commission, governments and food regulatory agencies, industries and other people or institutions with an interest in the area of Listeria monocytogenes, its impact o n public health and food trade, and the use microbiological risk assessment in control strategies.
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    Case study: Listeria monocytogenes in smoked fish
    Background paper for the Joint FAO/WHO expert consultation on the development of risk management strategies based on microbiological risk assessment outputs - Kiel, Germany, 3-7 April 2006
    2006
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    Listeria monocytogenes is a gram positive, facultatively anaerobic, psychrotrophic bacterial species that is capable of causing life-threatening septicaemia and meningitis in adult humans, and infections in foetuses and neonates that can lead to spontaneous abortions, foetal death, and septicaemia. This is typically a disease of specific high risk subpopulations with depressed or altered immune responses due to age, pregnancy, medical interventions, or chronic, immunosuppressive diseases (e.g., diabetes, HIV infections). In the past 20 years it has been established that the primary route of transmission for this pathogenic microorganism is food, with ready-to-eat foods that support the growth of the bacterium representing the greatest risk to the consumer; i.e., foods with high levels of L. monocytogenes are much more likely to cause listeriosis than low levels.
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    Book (series)
    Evaluación de riesgos de Listeria monocytogenes en alimentos listos para el consumo. Resumen Interpretativo. Serie de Evaluación de Riesgos Microbiológicos (MRA) 4 2005
    Los objetivos de la presente evaluación de los riesgos por Listeria monocytogenes en alimentos listos para el consumo (LPC) son los siguientes: i) responder a la solicitud del Comité del Codex sobre Higiene de los Alimentos (CCFH) de asesoramiento científico riguroso en el que basar el desarrollo de directrices para el control de L. monocytogenes en alimentos y ii) abordar las necesidades expresadas por los países miembros de contar con evaluaciones de riesgos adaptables que puedan utilizar como base para la adopción de decisiones en materia de gestión de riesgos y para realizar evaluaciones propias.

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