Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries
Quality standards and regulations for hygienic milk handling are put in place to protect consumers from milk-borne hazards. Whereas standards and regulations that insist on cold chain pathways and pasteurization have been successfully implemented in western countries, they have largely failed in m...
| Main Authors: | , , , |
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| Format: | Conference Paper |
| Language: | Inglés |
| Published: |
International Symposia for Veterinary Epidemiology and Economics
2006
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/1435 |
| _version_ | 1855539027029000192 |
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| author | Omore, Amos O. Grace, Delia Randolph, Thomas F. Mohammed, H. |
| author_browse | Grace, Delia Mohammed, H. Omore, Amos O. Randolph, Thomas F. |
| author_facet | Omore, Amos O. Grace, Delia Randolph, Thomas F. Mohammed, H. |
| author_sort | Omore, Amos O. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Quality standards and regulations for hygienic milk handling are put in place to protect consumers from
milk-borne hazards. Whereas standards and regulations that insist on cold chain pathways and pasteurization
have been successfully implemented in western countries, they have largely failed in most of the developing
world.
We carried out a risk assessment study for E. coli 0157:H7 in marketed raw and fermented milk in
Kenya, Tanzania and Ghana. Data for the risk models were obtained from our on-going studies and other
relevant literature. Scenario pathway models were developed for raw and fermented milk using event and fault
trees, respectively. Because of the lack of suitable dose-response models, we used published models in our
analyses. Sensitivity analyses were performed to assess the uncertainty and variability associated with the
model.
Our analysis demonstrated that the risk associated with raw milk was relatively minimal since the raw
milk is generally boiled before consumption. The risk also varied significantly due to the differences in methods
of fermentation including time and duration, and the amounts consumed. Translating our findings in the context
of regulations showed that current regulations should be re-assessed and based on an appropriate food safety
objective of the particular country and the acceptable level of protection. The current standards and regulations
that lack science-based recommendations need revision in the light of this risk assessment. |
| format | Conference Paper |
| id | CGSpace1435 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | International Symposia for Veterinary Epidemiology and Economics |
| publisherStr | International Symposia for Veterinary Epidemiology and Economics |
| record_format | dspace |
| spelling | CGSpace14352016-04-15T12:26:48Z Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries Omore, Amos O. Grace, Delia Randolph, Thomas F. Mohammed, H. milk food safety escherichia coli Quality standards and regulations for hygienic milk handling are put in place to protect consumers from milk-borne hazards. Whereas standards and regulations that insist on cold chain pathways and pasteurization have been successfully implemented in western countries, they have largely failed in most of the developing world. We carried out a risk assessment study for E. coli 0157:H7 in marketed raw and fermented milk in Kenya, Tanzania and Ghana. Data for the risk models were obtained from our on-going studies and other relevant literature. Scenario pathway models were developed for raw and fermented milk using event and fault trees, respectively. Because of the lack of suitable dose-response models, we used published models in our analyses. Sensitivity analyses were performed to assess the uncertainty and variability associated with the model. Our analysis demonstrated that the risk associated with raw milk was relatively minimal since the raw milk is generally boiled before consumption. The risk also varied significantly due to the differences in methods of fermentation including time and duration, and the amounts consumed. Translating our findings in the context of regulations showed that current regulations should be re-assessed and based on an appropriate food safety objective of the particular country and the acceptable level of protection. The current standards and regulations that lack science-based recommendations need revision in the light of this risk assessment. 2006-08-06 2010-05-09T19:17:50Z 2010-05-09T19:17:50Z Conference Paper https://hdl.handle.net/10568/1435 en Open Access International Symposia for Veterinary Epidemiology and Economics Omore, A., Grace, D., Randolph, T. and Mohammed, H. 2006. Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries. In: ISVEE 11: Proceedings of the 11th Symposium of the International Society for Veterinary Epidemiology and Economics, Cairns, Australia. p. 1002. |
| spellingShingle | milk food safety escherichia coli Omore, Amos O. Grace, Delia Randolph, Thomas F. Mohammed, H. Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries |
| title | Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries |
| title_full | Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries |
| title_fullStr | Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries |
| title_full_unstemmed | Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries |
| title_short | Risk assessment for E. coli O157:H7 in marketed raw and fermented milk in selected African countries |
| title_sort | risk assessment for e coli o157 h7 in marketed raw and fermented milk in selected african countries |
| topic | milk food safety escherichia coli |
| url | https://hdl.handle.net/10568/1435 |
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