bacterial infection AE nontuberculous mycobacteria infection AE NTM infection AE http://www.lung.org/lung-health-and-diseases/lung-disease-lookup/nontuberculosis-mycobacteria/learn-about-ntm.html BY. YH A bacterial infection AE that is caused by exposure to environmental sources of nontuberculous mycobacteria (NTM), which leads to NTM entering the lungs, causing inflammation in the respiratory system. This AE can lead to progressive lung infection characterized by cough, shortness of breath, fatigue, and weight loss.