"Each case of food-borne illness cannot be traced, but where we do know the original, or the "vehicle of transmission," it is, overwhelmingly, an animal product. According to the US Centers for Disease Control (CDC), poultry is by far the largest cause... 83 percent of all chicken meat (including organic and antibiotic-free brands) is infected with either campylobacter or salmonella at the time of purchase... The next time a friend has... "the stomach flu" - ask a few questions... he or she was probably among the 76 million cases of food-borne illness the CDC estimates occur in America each year."