Heard this on the TV news this morning, the insanely chipper Today Show newsreader grinning like a fool as she reported this.
The USDA folks all spouted off their "We're certain this cow didn't enter the food supply, we're back-checking to determine where it came from, our food is safe, etc. etc." line once more.
I'm not afraid of this—I like a good steak or burger too much to let it futz with my day-to-day life at this point—but I am curious to see what the investigation turns up.