I think it likely is rare, because actually I think one of the things we found out is that of the 12 million to 13 million food-borne diseases that happen every year across this country, there's a very small percentage that actually get into that sort of crisis situation. So when that crisis situation happens, my understanding is that's when they move, rather than necessarily on a daily basis. I think that would make some sense.
On June 1st, 2009. See this statement in context.