My 5 year old daughter was recently diagnosed with this bug, she first was prescribed levaquin and bactrim, and they did not clear it up at all, in fact it got worse. So her doctor put her on IVs (timetin) for 3 weeks, 8 hours at night and she also continued to take bactrim. She is now off the IVs and we have not had a lung culture yet to see if her infection has cleared up (she will have one this month, at her next visit) She continues to take bactrim 4 times a day. She seems much better, she really is not coughing now at all<img src="i/expressions/face-icon-small-smile.gif" border="0">. From what I was told, this bug is hard to clear up, however it is not as damaging. Since she was diagnosed, we have increased her treatments, she does her vest therapy 3Xs a day, duoneb 3X's a day, pulmicort 2X a day and advair 2X a day. It is a lot to keep up with, but it really seems to help. Her cough is non-existint when we do the therapy everyday without missing any. I really hope that this clears up! It has been the first time she has been on IVs.Take care and good luck!Marissa