Hi @src3acs, I, too, was diagnosed with bronchiectasis and MAC over 3 years ago. I have not taken any drugs for MAC (there is no effective drugs for bronchiectasis). I don't know for sure if I'm still infected with MAC. But because my last chest X-ray indicated improvement in my lung conditions, I assume I'm no longer infected. Since there is no cure for bronchiectasis, the best we can do is to manage it in order to slow down the progression of the disease. I have not had any symptoms of shortness of breath or fatigue. Not even when I was first diagnosed. In fact I'm still physically very active, playing tennis 2-3 times a week without any of these problems. I'm not a doctor. But I suspect that the shortness of breath you are experiencing could cause the fatigue because of lack of oxygen in your blood. Is it possible that you might have other issues with your lungs besides bronchiectasis and MAC? Have your doctors looked into that possibility?