The goal of this non-interventional registry study is to systematically collect epidemiological and clinical data throughout the treatment course to learn about effectiveness of treatments. We will document the natural course of therapy without additional interventions. The main question to answer is: What are the risk factors for mortality due to infection with Mycobacteria tuberculosis (TB) or Nontuberculous mycobacteria (NTM) in Austria? Data from participants already receiving treatment as part of their regular medical care for TB or NTM infections will be collected.