This research confirmed in that use of wastes for the purposes of soil improvement provides a mechanism for contamination of food with live microbiological pathogens. Guidance on the management of wastes for application to farm land is expected soon.
Evidence from:
FSA News October 2006
“Transmission of Pathogens from Farm and Abattoir Waste to the Food Supply Chain and its Impact on the Microbiological Safety of Food”
Recycling of animal wastes is becoming more sophisticated but as yet there is no definitive guidance of risk management. Some viruses are very much more persistent in wastes than are E coli. E coli is the usual reference species for risk assessment.
Further detail: