Are there by any chance any doctors out there who can clear up the whole "you can/can't get it again" debate? Because I know people who have had it several times and were not immune compromised, plus I've always been told that once you get it you're more susceptible to getting it again and again.
I myself have never had it (at least not that I know of
) but my school's student health office sure did test everybody for it (and strep as well) who walked in the door! It got to the point where I would ask them NOT to test me!