Risk assessment tools for Vibrio parahaemolyticus and Vibrio vulnificus associated with seafood


Book Description

There has been an increase in reported outbreaks and cases of foodborne disease attributed to pathogenic Vibrio species. As a result, there have been several instances where the presence of pathogenic Vibrio spp. in seafood has led to a disruption in international trade. A number of Vibrio spp. are increasingly being recognized as potential human pathogens. The food safety concerns associated with these microorganisms have led to the need for microbiological risk assessment for their control. This report provides the review of risk assessment of existing tools for V. parahaemolyticus and V. vulnificus in oysters and different bivalve molluscan species, the available information on testing methodology and recommend microbiological methods to monitor the levels of pathogenic Vibrio spp. in seafood and/or water. Such tools are envisioned to support countries in their efforts to use risk-based approaches in the selection of control measures appropriate for their seafood species, primary production and post-harvest practices. 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 regulatory authorities, food producers and processers and other institutions and individuals with an interest in Vibrio spp. and its control.










Advances in science and risk assessment tools for Vibrio parahaemolyticus and V. vulnificus associated with seafood


Book Description

Globally, the Vibrio parahaemolyticus and Vibrio vulnificus represent important human pathogens associated with the consumption of seafood. In response to the requests for scientific advice from Codex Committee on Food Hygiene (CCFH), risk assessments for the pathogens V. vulnificus, V. cholerae, V. parahaemolyticus and guidance on methods for the detection of Vibrio spp. with seafood have been conducted and published previously by JEMRA. In order to provide an update on the state-of-the-art advice regarding risk assessment for V. parahaemolyticus and V. vulnificus in seafood, an expert meeting was convened. Several critical developments in the last decade were subsequently noted by the expert working group: 1) The emergence of highly pathogenic strains; 2) In response to climate change, there has been a significant geographical spread regarding when and where these seafood-associated Vibrio infections; 3) Demographic considerations are very important; 4) A range of new approaches for best practice; and 5) A range of new methods, such as those utilising genomics and satellite imagery. This report describes the output of that expert meeting.




Risk Assessment of Vibrio Parahaemolyticus in Seafood


Book Description

Vibrio parahaemolyticus are common causes of diarrhoeal disease worldwide. These marine micro-organisms, native in estuarine waters globally, concentrate in the gut of filter-feeding molluscan shellfish, such as oysters, clams and mussels. Raw and undercooked seafood, including finfish, represent the principal vehicle of transmission to humans. This volume considers the applicability of an assessment of the public health impact of raw oyster consumption, developed in one country, to assess the public health risk associated with the consumption of raw oysters harvested in other countries where different growing and harvesting scenarios might exist. The approach is also applied to bloody clams and finfish to establish if such a risk assessment can also be adapted to other types of shellfish and finfish. This work is therefore divided in three parts focusing on (i) risk assessment of Vibrio parahaemolyticus in raw oysters, (ii) risk assessment of Vibrio parahaemolyticus in bloody clam and (iii) risk assessment of Vibrio parahaemolyticus in finfish. As well as providing insights on the risks associated with consumption of these commodities, the work also addresses how to make maximum use of existing and/or limited resources. This volume and others in the Microbiological Risk Assessment Series contain information that is useful to both risk assessors and risk managers, including international scientific committees, the Codex Alimentarius Commission, governments and food regulatory agencies, scientists, food producers and industries and other people or institutions with an interest in the area of microbiological hazards in foods, their impact on human health and food trade and their control.







Present Knowledge in Food Safety


Book Description

Present Knowledge in Food Safety: A Risk-Based Approach Through the Food Chain presents approaches for exposure-led risk assessment and the management of changes in the chemical, pathogenic microbiological and physical (radioactivity) contamination of 'food' at all key stages of production, from farm to consumption. This single volume resource introduces scientific advances at all stages of the production to improve reliability, predictability and relevance of food safety assessments for the protection of public health. This book is aimed at a diverse audience, including graduate and post-graduate students in food science, toxicology, microbiology, medicine, public health, and related fields. The book's reach also includes government agencies, industrial scientists, and policymakers involved in food risk analysis. - Includes new technologies such as nanotechnology, genetic modification, and cloning - Provides information on advances in pathogen risk assessment through novel and real-time molecular biological techniques, biomarkers, resistance measurement, and cell-to-cell communication in the gut - Covers the role of the microbiome and the use of surrogates (especially for viruses)







Control measures for Shiga toxin-producing Escherichia coli (STEC) associated with meat and dairy products


Book Description

Although Shiga toxin-producing Escherichia coli (STEC) have been isolated from a variety of food production animals, they are most commonly associated with ruminants from which we derive meat and milk. Because of the widespread and diverse nature of ruminant-derived food production, coupled with the near ubiquity of STEC worldwide, there is no single definitive solution for controlling STEC that will work alone or in all situations. Instead, the introduction of multiple interventions applied in sequence, as a “multiple-hurdle scheme” at several points throughout the food chain (including processing, transport and handling) will be most effective. This report summarises the review and evaluation of interventions applied for the control of STEC in cattle, raw beef and raw milk and raw milk cheese manufactured from cows’ milk, and also evaluated available evidence for other small ruminants, swine and other animals. The information is presented from primary production, to the end of processing, providing the reader with information on the currently available interventions based on the latest scientific evidence. This work was undertaken to support the development of guidelines for the control of STEC in beef, raw milk and cheese produced from raw milk by the Codex Committee on Food Hygiene (CCFH).