My CT scan showed improvement from May to November of 2024 without doing anything. All nodules decreased in size. But now, I have most of the Mycobacterium Abscesses symptoms and will be starting the antibiotics as soon as the order goes through. I also have a CT scan scheduled, so will know soon how it's progressed. My ID doctor also told me to stop the 7% nebulizing twice a day and go to 3.5% once per day. She also told me the Arikayce can take up to a month to get, most likely due to insurance. If your MAC is not resistant to Azithromycin, consider yourself very lucky. Do not take a Zpak (or and macrolide) for a secondary infection, you don't want the MAC to become macrolide resistant. Good luck! Kathy