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Understanding Nontuberculous Mycobacteria and Their Clinical Significance Nontuberculous mycobacteria (NTM) are a diverse group of mycobacterial species found widely in the environment. Unlike tuberculosis-causing bacteria, NTM are not typically transmitted from person to person. Instead, exposure usually occurs through natural sources such as water, soil, and dust. Although many people encounter these organisms daily without consequence, NTM can cause serious illness in certain individuals. NTM primarily affect the lungs, but they can also infect the skin, lymph nodes, and other organs. Pulmonary NTM disease is most commonly seen in people with underlying lung conditions, such as bronchiectasis or chronic obstructive pulmonary disease. Symptoms often develop slowly and may include chronic cough, fatigue, shortness of breath, and weight loss. Because these signs resemble other respiratory illnesses, diagnosis can be delayed. Reference - https://www.marketresearchfuture.com/reports/nontuberculous-mycobacteria-market-16170