Let's try this again...
I have not heard of "Atypical CF" before I started reading this forum.
My personal symptoms are "mild" so far, but I know I wouldn't last too long without modern medicine. That fact makes my case seem pretty serious to me. It seems like a good definition of "Atypical" would be "indefinitely functional without antibiotics, yet still have genetically defined CF". ALthough, I might argue that isn't really CF <img src="i/expressions/face-icon-small-smile.gif" border="0">