An article published in the September edition of Foodborne Pathogens and Disease, “Investigation of Listeria, Salmonella, and toxigenic Escherichia coli in various pet foods” (see link below) indicates 65 out of 196 samples of raw dog or cat foods were positive for Listeria. In addition 15 of the 196 samples were positive for salmonella and two were positive for shiga toxin producing E coli.
“This study showed that raw pet foods may harbor food safety pathogens, such as Listeria and Salmonella” the article states. Consumers should handle these products carefully, being mindful of the potential risks to human and animal health.”
The authors also found that 2 of 190 jerky-type treats were positive for shiga toxin producing E coli, and one was positive for Listeria.
Also attached is a great article regarding the current knowledge base of the risks and benefits of raw food diets.