@janovr I believe locale has a lot to do with how sick people become with mac and pseudomonas. Whenever I am in the state of Virginia for too long, I get re-infected with either mac or pseudomonas. 'Too long' for me in that state is like three months. Now, I take shorter visits up there. I wouldn't go at all except that ALL of my family is there, including my one and only daughter. I believe it could be due to the dampness there. That makes for more molds and god knows what under the rotting leaves. I now live in South Carolina near the shore. The ground is dry 20 minutes after it rains because it drains quickly through the sandy soil. I have done so much better health wise since I moved here. (that, and going to Mayo Clinic).