My 12 1/2 year old daughter was diagnosed at birth. She's been on enzymes, Pulmozyme, chest PT, etc., but with that has been remarkably healthy -- her lung function is usually at, or above, predicted, no hospitalizations, no crises. Then, starting this past August, she has had a constant run of colds. Some develop secondary infections, others don't, but she's sick (very stuffy nose, mainly) for 10 to 12 days every month. She has no allergies, no apparent asthma (we're testing for it soon.) She tested positive for pseudemonas for the first time in February, but with Tobi it was erradicated in one month, but she still got another cold after that. The doctor does not think the pseudemonas is the cause of the colds. Has anyone had this experience? Why is she getting sick so often and what can we do to keep her healthy other than isolate her from the world?