Food Consumption Data in Microbiological Risk Assessment

2004 ◽  
Vol 67 (9) ◽  
pp. 1972-1976 ◽  
Author(s):  
LEILA M. BARRAJ ◽  
BARBARA J. PETERSEN

The 1st International Conference on Microbiological Risk Assessment: Foodborne Hazards was held in July 2002. One of the goals of that conference was to evaluate the current status and future needs and directions of the science of microbial risk assessment. This article is based in part on a talk presented at that meeting. Here, we review the types of food consumption data available for use in microbial risk assessments and address their strengths and limitations. Consumption data available range from total population summary data derived from food production statistics to detailed information, derived from national food consumption surveys, about the types and amounts of food consumed at the individual level. Although population summary data are available for most countries, detailed data are available for a limited number of countries and may only be available in summary format. Despite the relatively large amount of detailed information collected by these national surveys, information crucial to microbial risk assessments, such as the specific types of foods, the eating patterns of susceptible populations, or an individual's propensity for consuming high-risk foods (e.g., eating undercooked hamburgers, raw shellfish, or temperature-abused foods), are not collected during these surveys.

Parasitology ◽  
1999 ◽  
Vol 117 (7) ◽  
pp. 205-212 ◽  
Author(s):  
C. J. GIBSON ◽  
C. N. HAAS ◽  
J. B. ROSE

Throughout the past decade much research has been directed towards identifying the occurrence, epidemiology, and risks associated with waterborne protozoa. While outbreaks are continually documented, sporadic cases of disease associated with exposure to low levels of waterborne protozoa are of increasing concern. Current methodologies may not be sensitive enough to define these low levels of disease. However, risk assessment methods may be utilised to address these low level contamination events. The purpose of this article is to provide an introduction to microbial risk assessment for waterborne protozoa. Risk assessment is a useful tool for evaluating relative risks and can be used for development of policies to decrease risks. Numerous studies have been published on risk assessment methods for pathogenic protozoa including Cryptosporidium and Giardia. One common notion prevails: microbial risk assessment presents interesting complications to the traditional chemical risk assessment paradigm. Single microbial exposures (non-threshold) are capable of causing symptomatic illness unlike traditional chemical exposures, which require a threshold to be reached. Due to the lack of efficient recovery and detection methods for protozoa, we may be underestimating the occurrence, concentration and distribution of these pathogenic micro-organisms. To better utilize the tool of microbial risk assessment for risk management practices, future research should focus in the area of exposure assessment.


2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Dimitra Karageorgou ◽  
Laura Lara-Castor ◽  
Catherine Leclercq ◽  
Victoria Padula de Quadros ◽  
Sofia Ioannidou ◽  
...  

Abstract Objectives To systematically identify, compile, and harmonize national and sub-national individual-level dietary data around the world using a common food classification and description system (FCDS); promote collaboration with data owners worldwide; and publicly disseminate methods and datasets to the global nutrition community. Methods The Global Dietary Database (GDD) and the FAO/WHO Global Individual Food consumption data Tool (FAO/WHO GIFT) initiative, in collaboration with the European Food Safety Authority (EFSA), developed a framework to standardize the characterization of 24-hour recall and food record survey data at their finest level, using FoodEx2 (Figure). FoodEx2 is a comprehensive FCDS developed by EFSA, adapted for international high-quality food characterization and methodologically superior to prior international FCDS. Single food items are characterized through a classification system (hierarchical nested food groups) and 32 description elements (facets), such as cooking process. Standardized criteria, procedures, and templates were developed to: (1) identify and (2) prioritize eligible surveys for FoodEx2 mapping; (3) efficiently contact data owners and obtain approval for public dissemination; (4) allocate financial assistance as appropriate; (5) obtain survey information and assess survey and diet tool quality; (6) train data owners on dataset preparation and FoodEx2 mapping; (7) collect harmonized microdata, including structure, sociodemographics, diet metrics, units of measure, and food characterization; and (8) publicly disseminate methods and datasets via the GDD and FAO/WHO GIFT platforms. Results A total of 151 surveys have been identified as high priority. Harmonization has been completed for 24 European surveys by EFSA, which will be incorporated in the GDD and FAO/WHO GIFT platforms upon approval of data owners; 8 surveys by FAO/WHO GIFT; and is ongoing for another 4. Thus far, the data owners of 53 surveys from 41 countries, including Brazil, India, and Iran, confirmed interest in joining; all surveys either used none or a local FCDS. Conclusions These new methods developed will provide the most comprehensive and standardized databases of dietary intakes worldwide. Such global dietary data harmonization is imperative for global diet monitoring and informed priority setting. Funding Sources Gates Foundation. Supporting Tables, Images and/or Graphs


2017 ◽  
Vol 59 ◽  
pp. 111-123 ◽  
Author(s):  
Sophie Birot ◽  
Charlotte B. Madsen ◽  
Astrid G. Kruizinga ◽  
Tue Christensen ◽  
Amélie Crépet ◽  
...  

2010 ◽  
Vol 13 (6A) ◽  
pp. 915-919 ◽  
Author(s):  
Heli Reinivuo ◽  
Tero Hirvonen ◽  
Marja-Leena Ovaskainen ◽  
Tommi Korhonen ◽  
Liisa M Valsta

AbstractA cross-sectional survey, FINDIET 2007, was carried out in Finland. Food intake data was collected by a 48 h recall interview. Additional food intake data was collected by a repeated 3 d food diary, a barcode-based product diary, a food frequency questionnaire and by a supplementary questionnaire on rarely eaten foods. The purpose of the present paper is to describe the methodology of the national dietary survey and to discuss the particular implications for the applications of food consumption data in risk assessment. The food consumption data of the FINDIET 2007 survey can be used in food risk assessment, due thanks to flexible data processing of individual food consumption, and a risk assessment point of view was taken into account. However, international standardisation projects are needed in order to estimate comparable food intakes.


Author(s):  
Wells Utembe ◽  
Mary Gulumian

The risk assessment of lead (Pb) requires the use of biokinetic models to translate measured concentrations of Pb in food and environmental media into blood lead (BPb). The aim of this study was to assess the applicability of the Integrated Exposure Uptake Biokinetic (IEUBK) model in the health risk assessment of Pb among children in Blantyre. Children (152) aged 1–6 years were recruited into this cross-sectional study, and foods, house dust, playground soil, water, and venous blood (1 mL) were collected and analyzed for Pb. A seven-day food frequency questionnaire (FFQ) was used to collect food consumption data. The concentrations of Pb ranged from 0.01 to 3.3 mg/kg in food, 2.3 to 265 mg/kg and 1.5 to 482 mg/kg in house dust and playground soil, respectively, as well as 2.0 µg/dL to 50.4 µg/dL and 6.8 to 39.2 µg/dL for measured and predicted BPb, respectively. Various statistical tests indicated less than satisfactory agreement between measured and predicted BPb values. Despite the lack of reliable food consumption data and other limitations, both the predicted and measured BPb values indicate that children in Blantyre are exposed to high levels of Pb, largely through food and soil as a minor source.


2011 ◽  
Vol 9 (1) ◽  
pp. 10-26 ◽  
Author(s):  
Margaret Donald ◽  
Kerrie Mengersen ◽  
Simon Toze ◽  
Jatinder P.S. Sidhu ◽  
Angus Cook

Modern statistical models and computational methods can now incorporate uncertainty of the parameters used in Quantitative Microbial Risk Assessments (QMRA). Many QMRAs use Monte Carlo methods, but work from fixed estimates for means, variances and other parameters. We illustrate the ease of estimating all parameters contemporaneously with the risk assessment, incorporating all the parameter uncertainty arising from the experiments from which these parameters are estimated. A Bayesian approach is adopted, using Markov Chain Monte Carlo Gibbs sampling (MCMC) via the freely available software, WinBUGS. The method and its ease of implementation are illustrated by a case study that involves incorporating three disparate datasets into an MCMC framework. The probabilities of infection when the uncertainty associated with parameter estimation is incorporated into a QMRA are shown to be considerably more variable over various dose ranges than the analogous probabilities obtained when constants from the literature are simply ‘plugged’ in as is done in most QMRAs. Neglecting these sources of uncertainty may lead to erroneous decisions for public health and risk management.


2018 ◽  
Vol 118 ◽  
pp. 371-381 ◽  
Author(s):  
Sophie Birot ◽  
Charlotte B. Madsen ◽  
Astrid G. Kruizinga ◽  
Amélie Crépet ◽  
Tue Christensen ◽  
...  

2012 ◽  
Vol 153 (43) ◽  
pp. 1692-1700
Author(s):  
Viktória Szűcs ◽  
Erzsébet Szabó ◽  
Diána Bánáti

Results of the food consumption surveys are utilized in many areas, such as for example risk assessment, cognition of consumer trends, health education and planning of prevention projects. Standardization of national consumption data for international comparison is an important task. The intention work began in the 1970s. Because of the widespread utilization of food consumption data, many international projects have been done with the aim of their harmonization. The present study shows data collection methods for groups of the food consumption data, their utilization, furthermore, the stations of the international harmonization works in details. The authors underline that for the application of the food consumption data on the international level, it is crucial to harmonize the surveys’ parameters (e.g. time of data collection, method, number of participants, number of the analysed days and the age groups). For this purpose the efforts of the EU menu project, started in 2012, are promising. Orv. Hetil., 2012, 153, 1692–1700.


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