Role of Programs Designed To Improve the Microbiological Safety of Imported Food

Ewen Todd; Julie A. Caswell

doi:10.1128/9781555815745.ch8

Chapter 8 : Role of Programs Designed To Improve the Microbiological Safety of Imported Food

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Affiliations: 1: Director, Food Safety Policy Center, and Professor, Department of Advertising, Public Relations and Retailing, 328 Communications Arts and Sciences Building, Michigan State University, East Lansing, MI 48824; 2: Professor and Chairperson, Dept. of Resource Economics, 215 Stockbridge Hall, University of Massachusetts, 80 Campus Center Way, Amherst, MA 01003-9246

Content Type: Monograph

Publication Year: 2008

Category: Applied and Industrial Microbiology; Food Microbiology

Book DOI: 10.1128/9781555815745

Chapter DOI: 10.1128/9781555815745.ch8

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Abstract:

Conflicting issues often emerge and must be resolved in order to implement an effective strategy to improve the microbiological safety of imported food, as illustrated in the two boxed examples that follow: (i) BSE and the risk of variant Creutzfeld-Jakob Disease (vCJD) from eating beef, and (ii) Salmonella in eggs and broilers. This chapter describes the range of tools adopted to improve the microbiological safety of imported food. The proliferation of private standards and related certification raises important questions regarding their roles in ensuring the microbiological safety of imported food. International organizations play important leadership roles in efforts to improve the microbiological safety of foods. Among these organizations, the Codex Alimentarius Commission (Codex) is particularly important. The Codex standard-setting process and the standards themselves play an influential role in microbiological food safety for imported foods on several levels. In assessing the potential value of risk-based programs to improving the microbiological safety of imported foods, it is also necessary to consider how economics may challenge their value. Risk management is the identification and selection of appropriate food safety controls based on risk assessment and other factors that may be important to the risk management decision. The Hazard Analysis Critical Control Points (HACCP) approach is a prime example of the application of risk management principles in a systematic manner. Government is responsible for introducing or strengthening existing emergency response systems to respond to food bioterrorism by identifying necessary components of an emergency response program.

Citation: Todd E, Caswell J. 2008. Role of Programs Designed To Improve the Microbiological Safety of Imported Food, p 209-254. In Doyle M, Erickson M (ed), Imported Foods. ASM Press, Washington, DC. doi: 10.1128/9781555815745.ch8

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Quantitative Risk Assessment: 0.4622048
Fruits and Vegetables: 0.44985288
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African Swine Fever: 0.4246594
Fresh Fruits and Vegetables: 0.4241479

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References

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1. Alberts, B., 2005. Modeling attacks on the food supply. Proc. Natl. Acad. Sci. USA 102 : 9737– 9738.

2. Anonymous. 1991. Cholera—New Jersey and Florida. Morb. Mort. Wkly. Rep. 40 (17): 287– 289.

3. Anonymous. 1993. U.S. cleared in ‘89 scare over Chilean fruit. New York Times. January 2. [Online.] http://query.nytimes.com/gst/fullpage.html?sec=health&res= 9F0CEEDB1439F931A35752C0A965958260&partner=rssnyt&emc=rss. Accessed 1 June 2007.

4. Anonymous. 2006. Avian influenza, poultry vs. migratory birds (32) Fri, 14 Jul 2006 23:22:28–0400 Pro Med. [Online.] http://list.uvm.edu/cgi-bin/wa?A2=ind0607B&L=safety&P=6921. Accessed 8 June 2007.

5. Anonymous. 2007. Te Mata cheese thirsty for raw milk. Hawke’s Bay Today. May 17. [Online.] http://www.hbtoday.co.nz/localnews/storydisplay.cfm?storyid=3734274&thesection=localnews&thesubsection=&thesecondsubsection=. Accessed 18 May 2007.

6. Aust, S. D.,, C. D. Millis, and, L. Holcomb. 1987. Relationship of basic research in toxicology to environmental standard setting: the case of polybrominated biphenyls in Michigan. Arch. Toxicol. 60 :229– 237.

7. Australian Quarantine and Inspection Service (AQIS). 2002. Accessing the Australian market—Australia’s imported food requirements. [Online.] http://www.daff.gov.au/aqis/import/food/notices. Accessed 1 April 2008.

8. Beato, M. S.,, C. Terregino,, G. Cattoli, and, I. Capua. 2006. Isolation and characterization of an H10N7 avian influenza virus from poultry carcasses smuggled from China into Italy. Avian Pathol. 35 :400– 403.

9. Board on Global Health. 2006. Addressing Foodborne Threats to Health: Policies, Practices, and Global Coordination. Forum on Microbial Threats. Workshop Summary. Institute of Medicine of the National Academies, The National Academies Press, Washington, DC.

10. Bowers, J.,, A. Dalsgaard,, A. DePaola,, I. Karunasagar,, T. McMeekin,, M. Nishibuchi,, K. Osaka,, J. Sumner, and, M. Walderhaug. 2005. FAO/WHO Microbiological Risk Assessment Series, no.9. pp. 1–109. Risk assessment of choleragenic Vibrio cholerae O1 and O139 in warm-water shrimp in interational trade. World Health Organization, Geneva, Switzerland.

11. Buchanan, R.,, R. Lindqvist,, T. Ross,, M. Smith,, E. Todd, and, R. Whiting. 2004. Risk assessment of Listeria monocytogenes in ready-to-eat foods, pp. 1– 307. Technical Report. FAO/WHO Microbiological Risk Assessment Series, no.5. World Health Organization, Geneva, Switzerland.

12. Bull A. L.,, S. K. Crerar, and, M. Y. Beers. 2002. Australia’s Imported Food Program—a valuable source of information on micro-organisms in foods. Commun. Dis. Intell. 26 (1). [Online.] http://health.gov.au/internet/wcms/publishing.nsf/Content/cda-cdi2601-pdf-cnt.htm/$FILE/cdi2601f.pdf. Accessed 11 November 2007.

13. Butler, R. J.,, J. G. Murray and S. Tidswell. 2003. Quality assurance and meat inspection in Aust. Rev. Sci. Tech. Off. Int. Epiz. 22: 697– 712.

14. Canadian Food Inspection Agency (CFIA). 2007. Melamine in imported products. [Online.] http://www.inspection.gc.ca/english/fssa/concen/specif/vegproe.shtml. Accessed 11 June 2007.

15. Caswell, J. A., and, S. Joseph. 2008. Consumer demand for quality: major determinant for agricultural and food trade in the future? J. Int. Agric. Trade Dev. 4 (1) :99– 116.

16. Center for Infectious Disease & Research Policy (CIDRAP), University of Minnesota News. 2006. Michigan officials track smuggled Chinese poultry. {online.] http://www.cidrap.umn.edu/cidrap/content/influenza/avianflu/news/jul1306avian.html. Accessed 21 May 2007.

17. Chung, A., 2007. The trouble on the world’s farm. 20 May. Toronto Star [Online.] http://www.thestar.com/News/article/215857. Accessed 11 June 2007.

18. Codex Alimentarius Commission (CAC). 1979. Recommended International Code of Hygienic Practice for Foods for Infants and Children. CAC/RCP 21- 1979.

19. Codex Alimentarius Commission (CAC). 1997a. Guidelines for the Design, Operation, Assessment and Accreditation of Food Import and Export Inspection and Certification Systems. CAC/GL 26- 1997. [Online.] www.codexalimentarius.net/download/standards/362/CXG_034e.pdf Accessed 11 November 2007.

20. Codex Alimentarius Commission (CAC). 1997b. Codex Principles for the Establishment and Application of Microbiological Criteria for Foods. CAC/GL 21- 1997. [Online.] www.codexalimentarius.net/download/standards/394/CXG_021e.pdf. Accessed 11 November 2007.

21. Codex Alimentarius Commission (CAC). 2002. Report of the Evaluation of the Codex Alimentarius and Other FAO and WHO Food Standards Work. [Online.] www.fao.org/docrep/meeting/005/y7871e/y7871e00.htm. Accessed 11 November 2007.

22. Codex Alimentarius Commission (CAC). 2004. General Guidelines on Sampling. CAC/GL 50- 2004. [Online.] www.codexalimentarius.net/download/standards/10141/CXG_050e.pdf Accessed 11 November 2007.

23. Codex Alimentarius Commission (CAC). 2006. Codex Standard for Whey Cheeses (Codex Stan A-7-1971, Rev. w-2006). [Online.] www.codexalimentarius.net/web/standard_list.do?lang=en. Accessed 11 November 2007.

24. Cody, E., 2007. China contests complaints on exported food. Washington Post [Online.] www.washingtonpost.com/wp-dyn/content/article/2007/05/31/AR2007053100901.html. Accessed 31 May 2007.

25. Dagg, P. J.,, R. J. Butler,, J. G. Murray, and, R. R. Biddle. 2006. Meeting the requirements of importing countries: practice and policy for on-farm approaches to food safety. Rev. Sci. Tech. 25 :685– 700.

26. Ehmke, M. T., 2006. International differences in consumer preferences for food country-of-origin: a meta-analysis. Selected paper presented at the annual meeting of the American Agricultural Economics Association, Long Beach, CA, 23 to 26 July 2006. http://ageconsearch.umn.edu/bitstream/123456789/14638/1/sp06eh01.pdf. Accessed 2 April 2008.

27. ElAmin, A., 2007. Bernard Matthews lays off workers due to bird flu. February 21. MeatProcess.com. [Online.] http://www.meatprocess.com/news/ng.asp?id=74385-bernardmatthews-bird-flu-h-n. Accessed 26 June 2007.

28. EurActiv Network. 2007. Radio Frequency Identification Chips (RFID). [Online.] http://www.euractiv.com/en/infosociety/radio-frequency-identification-chips-rfid/article-158701. Accessed 22 August 2007.

29. European Food Safety Authority (EFSA) Task Force. 2007. Report of the Task Force on Zoonoses Data Collection on the analysis of the baseline survey on the prevalence of Salmonella in broiler flocks of Gallus gallus, in the EU, 2005–2006 [1]—Part A: Salmonella prevalence estimates. EFSA J. 98 :1– 85. [Online.] http://www.efsa.europa.eu/en/science/monitoring_zoonoses/reports/zoon_report_finbroilers.html. Accessed 22 June 2007.

30. European Union (EU). 2002. Regulation (EC) no. 178/2002 laying down the general principles and requirements of food law, establishing the European Food Safety Authority and laying down procedures in matters of food safety. Official Journal of the European Union no. L 031, 1.02.2002, p. 1.

31. Eyre, C., 2007. Australia gives go-ahead for GM wheat testing. FoodNavigator U.S.A.com. [Online.] http://www.foodnavigator-usa.com/news-by-product/news.asp?id=77490&idCat=0&k=Victorian-Department-of-Primary-Industri—GM-wheat. Accessed 22 June 2007.

32. Food & Water Watch. 2007. Import alert: government fails consumers, falls short on seafood inspections. [Online.] http://www.foodandwaterwatch.org/press/publications/reports/import-alert. Accessed 31 May 2007.

33. Food Standards Australia New Zealand (FSANZ). 2003. First Review Report Proposal P239. 19 March. 08/03 Listeria risk assessment and risk management strategy. [Online.] http://www.foodstandards.gov.au/_srcfiles/P239_Listeria_FRR.doc. Accessed 18 May 2007.

34. Furness, A., 2006. Data carriers for traceability. In I. Smith., and, A. Furness (ed.)., Improving Traceability in Food Processing and Distribution, p. 199– 237. CRC Press, Woodhead Publishing Ltd, Cambridge, England.

35. Furness, A., and, K. A. Osman. 2006. Developing traceability systems across the food supply chain: an overview. p. 3– 25. In I. Smith., and, A. Furness (ed.), Improving Traceability in Food Processing and Distribution. CRC Press, Woodhead Publishing Ltd, Cambridge, England.

36. Garcia, M.,, A. Fearne,, J. A. Caswell, and, S. Henson. 2007. Co-regulation as a possible model for food safety governance: opportunities for public-private partnerships. Food Policy 32: 299– 314.

37. General Accounting Office (GAO). 1998. Federal Efforts to Ensure Imported Food Safety Are Inconsistent and Unreliable. Statement of Robert E. Robertson, Associate Director, Food and Agriculture Issues, Resources, Community, and Economic Development Division. GAO/ T-RCED-98-191. U.S. General Accounting Office, Washington, DC.

38. General Accounting Office (GAO). 2003. Country-of-Origin Labeling: Opportunities for U.S.DA and Industry to Implement Challenging Aspects of the New Law. U.S. General Accounting Office, Washington, DC.

39. General Accountability Office (GAO). 2007. Federal Oversight of Food Safety: High-Risk Designation Can Bring Attention to Limitations in the Government’s Food Recall Programs. GAO-07-785T. 24 April 2007. U.S. General Accounting Office, Washington, DC.

40. Golan, E.,, T. Roberts,, E. Salay,, J. Caswell,, M. Ollinger, and, D. Moore. 2004. Food Safety Innovation in the United States: Evidence from the Meat Industry. Agricultural Economic Report no. 831. Department of Agriculture, Economic Research Service, Washington, DC. [Online.] http://www.ers.usda.gov/publications/aer831/. Accessed 11 November 2007.

41. Gorham, B., 2007. U.S. group claims banned Canadian cows moving across the border. The Globe and Mail, Canadian Press June 15. [Online.] http://www.theglobeandmail.com/servlet/story/RTGAM.20070615.wcows0615/BNStory/National/. Accessed 22 June 2007.

42. Hald, T.,, D. Vose,, H. C. Wegener, and, T. Koupeev. 2004. A Bayesian approach to quantify the contribution of animal-food sources to human salmonellosis. Risk Anal. 24 :255– 269.

43. Hatanaka, M.,, C. Bain, and, L. Busch. 2005. Third-party certification in the global agrifood system. Food Policy 30 :354– 369.

44. Hedges, S., 2007. Mad cow ‘minimum risk’ from Canadian beef, U.S. says. Chicago Tribune 15 January 2007. [Online.] http://www.chicagotribune.com/news/custom/newsroom/chi-070115madcow,1,4468187.story. Accessed 22 June 2007.

45. Heller, L., 2007. Global trade deal looks cloudy as Doha collapses—again. FoodNavigatorEurope.com. [Online.] http://www.foodnavigator.com/news/ng.asp?n=77587&m=1fne622&c=epfadfzbkiaduyg. Accessed 22 June 2007.

46. Hennesy, T. W.,, C. W. Hedberg,, L. Slustker,, K. E. White,, J. M. Besser-Wiek,, M. E. Moen,, J. Feldman,, W. W. Coleman,, L. M. Edmonson,, K. L. MacDonald, and, M. T. Osterholm. 1996. A national outbreak of Salmonella enteritidis infections from ice cream. N. Engl. J. Med. 334: 1281– 1286.

47. Holtby, I.,, G. M. Tebbutt,, S. Anwar,, J. Aislabie,, V. Bell,, W. Flowers,, J. Hedgley, and, P. Kelly. 2006. Two separate outbreaks of Salmonella enteritidis phage type 14b food poisoning linked to the consumption of the same type of frozen food. Public Health 120 :817– 823.

48. Huss, H. H.,, L. Ababouch, and, L. Gram. 2004. Assessment and management of seafood safety and quality. FAO Fisheries Technical Paper 444. Food and Agriculture Organization, Rome, Italy.

49. International Association for Food Protection (IAFP). 2007. Procedures to Investigate Foodborne Illness, 5th ed. 1999, revised 2007. International Association for Food Protection, Des Moines, IA.

50. Jaffee, S., and, S. Henson. 2004. Standards and Agro-Food Exports from Developing Countries: Rebalancing the Debate. Policy Research Working Paper 3348. The World Bank, Washington, DC.

51. Josling, T.,, D. Roberts, and, D. Orden. 2004. Food Regulation and Trade: Toward a Safe and Open Global System. Institute for International Economics, Washington, DC.

52. Kinde, H.,, A. Mikolon,, A. Rodriguez-Lainz,, C. Adams,, R. L. Walker,, S. Cernek-Hoskins,, S. Treviso,, M. Ginsberg,, R. Rast,, B. Harris,, J. B. Payeur,, S. Waterman, and, A. Ardans. 2007. Recovery of Salmonella, Listeria monocytogenes, and Mycobacterium bovis from cheese entering the United States through a noncommercial land port of entry. J. Food Prot. 70 :47– 52.

53. Lusk, J. L.,, J. Brown,, M. Tyler,, I. Proseku,, R. Thompson, and, J. Welsh. 2006. Consumer Behavior, Public Policy, and Country-of-Origin Labeling. Rev. Agric. Econ. 28 :284– 292.

54. Matthews, K. H.,, J. Bernstein, and, J. C. Buzby. 2003. International trade of meat/poultry products and food safety issues. p. 48– 73. In J. C. Buzby (ed.)., International Trade and Food Safety: Economic Theory and Case Studies. U.S. Department of Agriculture, Economic Research Service, Washington DC.

55. Mercer, C., 2005. Australia lifts Roquefort cheese safety ban. [Online.] http://www.ap-foodtechnology.com/news/ng.asp?id=62799-fsanz-roquefort-speciality-cheese. Accessed 18 May 2007.

56. National Academies, Institute of Medicine. 2007. Seafood Choices: Balancing Benefits and Risks. The National Academies Press, Washington, DC.

57. National Marine Fisheries Service (NMFS). 2007. FishWatch: US Seafood Facts, Trade. [Online.] http://www.nmfs.noaa.gov/fishwatch/trade_and_aquaculture.htm. Accessed 25 September 2007.

58. Oliver, J. D., and, J. B. Kaper. 2007. Vibrio species. p. 343– 379, In M. P. Doyle., and, L. R. Beuchat (ed.), Food Microbiology: Fundamentals and Frontiers, 3rd ed. American Society for Microbiology Press, Washington, DC.

59. Reynolds, G., 2006. FSA stands by Spanish Salmonella claims. FoodQualitynews.com. November 20. [Online.] http://www.foodqualitynews.com/news/ng.asp?n=72169-fsasalmonella-eggs. Accessed 22 August 2007.

60. Reynolds, G., 2007. German project to create meat analysis RFID. FoodProduction Daily [Online.] http://www.foodproductiondaily.com/news/ng.asp?id=73150-rfid-izm-meat. Accessed 8 Jun e 2007.

61. Ross, T.,, P. Dalgaard, and, S. Tienungoon. 2000. Predictive modelling of the growth and survival of Listeria in fishery products. Int. J. Food Microbiol. 62: 231– 245.

62. Sinclair, S., 2007. NAFTA Chapter 11 Investor-State Disputes (to 1 March 2007). Trade and Investment Research Project, Canadian Centre for Policy Alternatives. [Online.] http://policyalternatives.ca/documents/National_Office_Pubs/2007/NAFTA_Dispute_Table_ March2007.pdf. Accessed 26 June 2007.

63. Smith DeWaal, C.,, K. Johnson, and, F. Bhuiya. 2006. Outbreak Alert: Closing the Gaps in Our Federal Food-Safety Net. Center for Science in the Public Interest, Washington, DC.

64. Sterns, P. A.,, J. -M. Codron, and, T. Reardon. 2001. Quality and quality assurance in the fresh produce sector: a case study of European retailers. Paper presented at American Agricultural Economics Association annual meeting, Chicago IL, 5–8 August. [Online.] http://agecon.lib.umn.edu/cgi-bin/pdf_view.pl?paperid=2770&ftype=.pdf. Accessed 11 November 2007

65. Souza-Monteiro, D., and, J. A. Caswell. 2006. Traceability adoption at the farm level: analysis of the Portuguese pear industry. Paper presented at American Agricultural Economics Association annual meeting, Long Beach, Calif., July. [Online.] http://agecon.lib.umn.edu/cgi-bin/pdf_view.pl?paperid=21673&ftype=.pdf. Accessed 11 November 2007.

66. Tan, C. G.,, H. S. Sandhu,, D. C. Crawford,, S. C. Redd,, M. J. Beach,, J. W. Buehler,, E. A. Bresnitz,, R. W. Pinner,, B. P. Bell and the Regional Anthrax Surveillance Team. 2002. Surveillance for anthrax cases associated with contaminated letters, New Jersey, Delaware, and Pennsylvania, 2001. Emerg. Infect. Dis. 8 (10). [Online.] http://www.cdc.gov/ncidod/EID/vol8no10/02-0322.htm. Accessed 25 June 2007.

67. Todd, E. C. D., 2007. Listeria:risk assessment, regulatory control and economic impact, p. 717– 762. In E. T. Ryser., and, E. Marth (ed.), Listeria, Listeriosis and Food Safety, 3rd ed. Taylor and Francis, Boca Raton, Fla.

68. Todd, E. C. D.,, C. K. Harris,, A. J. Knight, and, M. R. Worosz. 2007. Spinach and the media: how we learn about a major outbreak. Food Prot. Trends 27 :314– 321.

69. Unterschultz, J.,, K. Quagrainie, and, M. Veeman. 1998. Effects of product origin and selected demographics on consumer choice of red meats. Can. J. Agric. Econ. 46 :201– 219.

70. U. K. Department for Environment, Food, Rural Affairs (DEFRA). 2007. Summary of initial epidemiological and virological investigations to determine the source and means of introduction of highly pathogenic H5N1 avian influenza virus into a turkey finishing unit in Suffolk, as at 14 February 2007. [Online.] http://www.defra.gov.uk/animalh/diseases/notifiable/disease/ai/pdf/epidemiological160207.pdf. Accessed 26 June 2007.

71. U. K. Food Standards Agency (FSA). 2004. Action stepped up on Salmonella outbreaks. Food Standards Agency. [Online.] http://www.food.gov.uk/news/newsarchive/2004/oct/spanisheggs. Accessed 22 June 2007.

72. U. K. Food Standards Agency (FSA). 2006. FSA surveys non-UK eggs for salmonella, Wednesday 15 November 2006. [Online.] http://www.food.gov.uk/news/newsarchive/2006/nov/eggs. Accessed 22 August 2007.

73. U. S. Food and Drug Administration (FDA). 2002. Public Health Security and Bioterrorism Preparedness and Response Act of 2002. [Online.] http://www.fda.gov/oc/bioterrorism/bioact.html. Accessed 26 June 2007.

74. U. S. Food and Drug Administration (FDA). 2003. Risk Assessment for food terrorism and other food safety concerns. Center for Food Safety and Applied Nutrition/Office of Regulations and Policy, Food and Drug Administration. [Online.] http://www.cfsan.fda.gov/~dms/rabtact.html#ftnref46. Accessed 26 June 2007.

75. U. S. Food and Drug Administration (FDA). 2007a. CARVER + Shock Software Tool, Food Defense and Terrorism, Food and Drug Administration. Center for Food Safety and Applied Nutrition, Food and Drug Administration. [Online.] http://www.cfsan.fda.gov/~dms/carver.html. Accessed 25 June 2007.

76. U. S. Food and Drug Administration (FDA). 2007b. FDA detains imports of farm-raised Chinese seafood. FDA News 28 June 2007. [Online.] http://www.fda.gov/bbs/topics/NEWS/2007/NEW01660.html. Accessed 11 November 2007

77. U. S. Food and Drug Administration (FDA). 2008. Compliance policy guide. Sec. 555.320. Listeria monocytogenes. http://www.fda.gov/ora/compliance_ref/cpg/cpgfod/draft_cpg555320.html. Accessed 2 April 2008.

78. van Larebeke, N.,, L. Hens,, P. Schepens,, A. Covaci,, J. Baeyens,, K. Everaert,, J. L. Bernheim,, R. Vlietinck, and, G. De Poorter. 2001. The Belgian PCB and Dioxin incident of January–June 1999: Exposure data and potential impact on health. Environ. Health Perspect. 109 :265– 273.

79. Verdenius, F., 2006. Using traceability systems to optimize business performance, p. 26– 51. In I. Smith., and, A. Furness (ed.), Improving Traceability in Food Processing and Distribution. CRC Press, Woodhead Publishing Ltd, Cambridge, England.

80. Vernède, R., and, I. Wienk. 2006. Storing and transmitting traceability data across the food supply chain, p. 183– 198. In I. Smith., and, A. Furness (eds.), Improving Traceability in Food Processing and Distribution. CRC Press, Woodhead Publishing Ltd, Cambridge, England.

81. Wein, L. M., and, Y. Liu. 2005. Analyzing a bioterror attack on the food supply: the case of botulinum toxin in milk. Proc. Natl. Acad. Sci.USA 102: 9984– 9989.

82. Weiss, R., 2007. The Washington Post May 200. [Online.] http://www.washingtonpost.com/wp-dyn/content/article/2007/05/19/AR2007051901273.html. Accessed 21 May 2007.

83. World Health Organization (WHO). 2002. Terrorist Threats to Food: Guidance for Establishing and Strengthening Prevention and Response Systems. Food Safety Department, World Health Organization, Geneva, Switzerland. [Online.] http://www.who.int/foodsafety/publications/general/en/terrorist.pdf. Accessed 25 June 2007.

84. World Bank. 2005. Food Safety and Agricultural Health Standards: Challenges and Opportunities for Developing Country Exports. Report no. 31027, Poverty Reduction & Economic Management Trade Unit, Agriculture and Rural Development Department, The World Bank, Washington, DC.