Journal article
Assessment of the dose-response relationship of Campylobacter jejuni
International journal of food microbiology, v 30(1), pp 101-111
1996
PMID: 8856377
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Abstract
Mathematical relations describing the risk of infection after exposure to enteropathogens are important tools for the evaluation of the potential health risk from exposure via food and water. A quantitative description of the dose-response relation for
Campylobacter jejuni with the Beta-Poisson model was fitted to experimental data of infection with
Campylobacter jejuni (as determined by shedding of
C. jejuni) obtained in human feeding studies performed by Black et al. (1988). The maximum likelihood estimates for the Beta-Poisson model parameters based on these data are:
\
̂
ga = 0.145 and
\
̂
gb = 7.59. The fit of the model on the experimental data was good: the difference between the likelihood obtained with the Beta-Poisson model and the maximum possible likelihood was not significant. The occurrence of symptoms of intestinal illness did not follow a similar dose-related trend. Overall, 22% of the infected volunteers developed symptoms (diarrhea, fever). The highest illness-to-infection ratio was found at an intermediate dose (9 × 10
4). The dose-response relation and the illness-to-infection ratio appeared to differ between different
C. jejuni isolates. The dose-response relation derived from feeding studies with a single isolate should therefore be considered indicative. The absence of experimental data in the low dose range resulted in a relatively large confidence interval at low doses. However, in cases where the dose-response relation has been applied so far to estimate the health risk of exposure to
C. jejuni in water, the uncertainty in the dose-response relation was insignificant compared to the uncertainty in the exposure estimate.
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Details
- Title
- Assessment of the dose-response relationship of Campylobacter jejuni
- Creators
- G.J Medema - Laboratory of Water and Food Microbiology, National Institute of Public Health and the Environment P.O. Box 1, 3720 BA Bilthoven, The NetherlandsP.F.M Teunis - Laboratory of Water and Food Microbiology, National Institute of Public Health and the Environment P.O. Box 1, 3720 BA Bilthoven, The NetherlandsA.H Havelaar - Laboratory of Water and Food Microbiology, National Institute of Public Health and the Environment P.O. Box 1, 3720 BA Bilthoven, The NetherlandsC.N Haas - Environmental Studies Institute, Building 29-W, Drexel University, Philadelphia, PA 19104, USA
- Publication Details
- International journal of food microbiology, v 30(1), pp 101-111
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:A1996VB14300009
- Scopus ID
- 2-s2.0-0030174228
- Other Identifier
- 991014878491004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Food Science & Technology
- Microbiology