In the past decade, several risk assessments for Shiga toxin-producing Escherichia coli (STEC) and Listeria monocytogenes have been developed to help guide management of these pathogens in various fresh produce commodities (e.g., leafy greens). There however is a need to summarize and understand the sources of the parameters used in these models to (i) better assess past risk assessment and (ii) develop future improved risk assessments. This review systematically identifies and then reviews 10 and 7 recently published, relevant risk assessments for STEC and L. monocytogenes in produce, respectively, aiming to uniformly extract parameters for cross-study comparison of underlying data sources, mathematical formula, and relevance. A total of XXX 53 73 key parameters estimates were extracted across five key stages in the produce supply chain, including (i) primary raw material production, (ii) harvest, (iii) packing houses and processing facilities, (iv) retail/food service, and (v) consumer storage and handling, as well as XX 34 total (vi) growth models and (vii) dose-response parameters for STEC and L. monocytogenes. These analyses identified “consensus” parameters, used by most or all relevant risk assessments. Consensus parameters often came from a single or just a few sources, which limits the development of risk assessments that appropriately account for parameter variability and, particularly, uncertainty. While the summaries of parameter values presented here will provide a valuable reference list for future risk assessments to pull values from, these also define future data needs, for example, to provide additional data for parameter estimates based on single datasets. Future risk assessment may benefit from additional systematic review and meta-analyses of parameter estimates, and extension of this critical review and analysis to other pathogens, such as Salmonella.
You can view the list of authors in the AUTHORS file.
Corresponding author: Matthew J. Stasiewicz
103 Agricultural Bioprocess Lab
1302 W. Pennsylvania
Urbana, IL, 1361801
USA
+1-217-265-0963
mstasie@illinois.edu
[Pending]
This project's dataset is licensed the Creative Commons Attribution Share Alike 4.0 International license. Please see the LICENSE.dataset files for details.
Funding for the project was made possible by The Center for Produce Safety project 2023CPS08. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of The Center for Produce Safety. (https://www.centerforproducesafety.org/).