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Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study

The practice of foodborne illness outbreak investigations has evolved, shifting away from large-scale community case-control studies towards more focused case exposure assessments and sub-cluster investigations to identify contaminated food sources. Criteria to include or exclude cases are establish...

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Detalles Bibliográficos
Autores principales: Firestone, M. J., Lee, P., Hedberg, C. W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Cambridge University Press 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7026893/
https://www.ncbi.nlm.nih.gov/pubmed/32029020
http://dx.doi.org/10.1017/S0950268820000138
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author Firestone, M. J.
Lee, P.
Hedberg, C. W.
author_facet Firestone, M. J.
Lee, P.
Hedberg, C. W.
author_sort Firestone, M. J.
collection PubMed
description The practice of foodborne illness outbreak investigations has evolved, shifting away from large-scale community case-control studies towards more focused case exposure assessments and sub-cluster investigations to identify contaminated food sources. Criteria to include or exclude cases are established to increase the efficiency of epidemiological analyses and traceback activities, but these criteria can also affect the investigator's ability to implicate a suspected food vehicle. A 2010 outbreak of Salmonella ser. Hvittingfoss infections associated with a chain of quick-service restaurants (Chain A) provided a useful case study on the impact of exclusion criteria on the ability to identify a food vehicle. In the original investigation, a case-control study of restaurant-associated cases and well meal companions was conducted at the ingredient level to identify a suspected food vehicle; however, 21% of cases and 22% of well meal companions were excluded for eating at Chain A restaurants more than once during the outbreak. The objective of this study was to explore how this decision affected the results of the outbreak investigation.
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spelling pubmed-70268932020-02-28 Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study Firestone, M. J. Lee, P. Hedberg, C. W. Epidemiol Infect Original Paper The practice of foodborne illness outbreak investigations has evolved, shifting away from large-scale community case-control studies towards more focused case exposure assessments and sub-cluster investigations to identify contaminated food sources. Criteria to include or exclude cases are established to increase the efficiency of epidemiological analyses and traceback activities, but these criteria can also affect the investigator's ability to implicate a suspected food vehicle. A 2010 outbreak of Salmonella ser. Hvittingfoss infections associated with a chain of quick-service restaurants (Chain A) provided a useful case study on the impact of exclusion criteria on the ability to identify a food vehicle. In the original investigation, a case-control study of restaurant-associated cases and well meal companions was conducted at the ingredient level to identify a suspected food vehicle; however, 21% of cases and 22% of well meal companions were excluded for eating at Chain A restaurants more than once during the outbreak. The objective of this study was to explore how this decision affected the results of the outbreak investigation. Cambridge University Press 2020-02-07 /pmc/articles/PMC7026893/ /pubmed/32029020 http://dx.doi.org/10.1017/S0950268820000138 Text en © The Author(s) 2020 http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Paper
Firestone, M. J.
Lee, P.
Hedberg, C. W.
Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study
title Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study
title_full Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study
title_fullStr Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study
title_full_unstemmed Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study
title_short Improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study
title_sort improving inclusion and exclusion criteria in foodborne illness outbreak investigations: a case study
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7026893/
https://www.ncbi.nlm.nih.gov/pubmed/32029020
http://dx.doi.org/10.1017/S0950268820000138
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