Abstract
In this chapter the principal approaches and legislation for controlling Giardia duodenalis in the food chain are described, with particular emphasis on HACCP and risk assessment (RA). An example is described in which quantitative microbial RA (QMRA) was used to estimate the risk of acquiring giardiasis from fresh produce (tomatoes, cucumbers, bell peppers and lettuce) being cultivated in Mexico. Data input into the model includes the concentration of Giardia cysts in irrigation water (including the efficiency of the detection method), the retention of irrigation water on the produce and the daily consumption of the various products by consumers in the USA. Worst-case assumptions included in the model (100 % transfer of cysts to produce, and all cysts being infectious to humans) are also noted. Although it is acknowledged that such exercises are flawed and limited, the utility of the data achieved is also discussed.
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© 2013 Lucy J. Robertson
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Robertson, L.J. (2013). Risk Assessment and Regulations. In: Giardia as a Foodborne Pathogen. SpringerBriefs in Food, Health, and Nutrition. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7756-3_7
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DOI: https://doi.org/10.1007/978-1-4614-7756-3_7
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