Contamination in our food supply, again.

I was just looking through a couple of CNN articles about hogs, and now chickens, eating tainted pet food. Seems that melamine, possibly along with cyanuric acid, has been added to some variations of wheat and rice gluten from China that end up in pet food. On some farms the hogs and chickens are fed surplus pet food as part of their diet. The FDA has assured us that there is very little possibility that humans will become ill from this. They have investigators in China trying to figure out the source of the tainted products.
In the case of chickens, Indiana found that 38 chicken facilities had fed chickens contaminated feed. An estimated 2.5 to 3 million people have eaten these chickens. Several hundred hogs from farms in 3 states entered the human food supply that were fed contaminated pet food.
With a global economy and industrialized factory farms, a contamination like this can be far reaching. As much as the FDA would like us to think everything is safe for human consumption and they are on top of it, I am sure there is no way they can maintain the quality control they claim.
I have read many case of the FDA and USDA not being able to, or wanting to, perform the necessary testing involved to assure that these types of contamination do not happen. The enormous scale of factory farming also creates a likely scenario for a single outbreak like this to lead to illnesses and deaths all over the country, possibly the world. Think back to how wide-spread the E. Colli outbreak in spinach became. The globalization of our economy and consolidation of our farms may be good for the profits of a few, but their lasting and long-term effects on humans and our planet can be devastating.