What happens to all the waste created by the
warehousing of tens of thousands of chickens?
Often times it is spread on fields where it can
introduce contaminents into the soil or
leach into ground water. One article I read said
earthworms which consume such waste can become
infected and in turn infect other birds. Maybe
this is how some of the infections have errupted
among the household chickens and the families who
raise them?
For some interesting statistics go to
http://www.upc-online.org/fouling.html