Do you repeat the lengthy treatment? Maybe - but even reinfection after treatment is weighed on the scale of when/whether to treat depending on the amount of bacteria, the specific type, the CT scan (cavities or nodules) and other symptoms.

There are as you say "so many questions" - and so many variables. If I am ever told that I have MAC again, I will head right for a specialty clinic that has the most experience and uses the latest protocols in treating it.

It is rare for a pulmonologist in general practice to see more than a few cases of bronchiectasis in a year - and rarer still to see a MAC infection. Thus many of them are unaware of the importance of things like daily airway clearance and using 7% saline nebs to suppress bacteria growth in the lungs.

Are you being seen by someone experienced in treating Bronchiectasis-caused lung infections?
Sue