http://skeptvet.com/Blog/2011/06/salmonella-and-other-risks-of-raw-pet-diets/ excerpt below
C. Health Risks:
As I have pointed out before, raw diets are more likely than cooked diets to be contaminated with infectious organisms, including Salmonella. Such organisms have been found in raw diets (1, 8-12) and have been found shed in the feces of pets eating these diets (13), they can be passed from pets to humans (13-16), and they have caused illness in both pets and humans (16-18).
Another recent paper in the Journal of the American Veterinary Medical Association, written by Dr. Kate KuKanich (19), specifically addresses the subject of Salmonella contamination in pet foods and treats. Her analysis of the literature shows that uncooked foods and treats are far more likely to be contaminated with Salmonella, and that up to 69% of sled dogs and 61% of racing greyhounds fed raw meat shed this organism in their feces even when they have no diarrhea or other clinical symptoms. This is compared to a rate of shedding of less than 5% up to 15% in studies of other healthy dogs. While Salmonella contamination after cooking has been found in dry diets, the risks for uncooked foods and treats are substantially higher, and Dr. KuKanich concludes, as I would,
Ample evidence exists for the risk of Salmonella contamination in raw food diets; thus, it is advised that pet owners avoid feeding raw food diets to pets.
