Risk Assessment and Regulations

  • Lucy J. Robertson
Part of the SpringerBriefs in Food, Health, and Nutrition book series (BRIEFSFOOD)


In this chapter, the principal approaches and legislation for controlling Cryptosporidium contamination 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 cryptosporidiosis from fresh produce (tomatoes, cucumbers, bell peppers and lettuce) being cultivated in Mexico. Data input into the model include the concentration of Cryptosporidium oocysts 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 oocysts to produce and all cysts being infectious to humans) are also noted. Another study is described that investigates the potential for foodborne cryptosporidiosis being acquired in the UK from ingestion of root crops grown in soil that has been augmented with treated sewage sludge. Although it is acknowledged that such exercises are flawed and limited, the utility of the data achieved is also discussed.


Irrigation Water Sewage Sludge Bell Pepper Cryptosporidium Oocyst Hazard Identification 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Lucy J. Robertson 2014

Authors and Affiliations

  • Lucy J. Robertson
    • 1
  1. 1.Institute for Food Safety & Infection Biology Norwegian School of Veterinary ScienceOsloNorway

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