Hi Terri, I have COPD and also have scarring in my lungs. I am still waiting to see my infectious disease doctor (it’s the end of year craziness with trying to get an appointment). I will talk to her about maintenance after I am finished with the antibiotics in 18 months. I really never thought I would be back in this place again. I am fairly certain I got MAC from the horse barn that I was boarding at. Super dirty, dusty and moldy! I also had aspergillus pneumonia (still waiting to see if I have that back, too) and one of the horse had an “infection” in it’s eye they couldn’t get rid of until they finally diagnosed it as aspergillus! So, now that Dylan is gone and I have stopped riding I am hoping that after my next round of drugs and lots of precautions with gardening, etc. it will stay gone! Thanks for all your great information. What a relief to have this group. I hope you are well and happy. Carolyn