Does anybody know if it's possible to get a flu shot at O'Hare this month? And if so, where? The U.Illinois medical site doesn't say anything.

Some years ago, I was changing planes in O'Hare in October and stumbled across a medical desk giving (well, $20, I think) flu shots, which was very handy. As I will be changing planes in Chicago again in a week, and will not have had time to get a flu shot, it would certainly be a convenience. (I mean for this year's 'regular' flu, not H1N1).