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Nontuberculous Mycobacteria Infections

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Diseases Caused by Nontuberculous Mycobacteria

To date, more than 150 different nontuberculous mycobacteria (NTM) species have been identified. Not all of those species are known to cause disease in humans. The table below lists 6 clinical conditions that are caused by NTM infection and the species most often associated with those conditions.

ConditionCommon causes
Lung (pulmonary) disease, especially in adults M. avium complex (MAC), M. kansasii, M. abscessus
Cervical lymphadenitis (infection of the lymph nodes in the neck), especially in children M. avium, M. intracellulare
Skin and soft tissue disease M. fortuitum, M. chelonae, M. abscessus, M. marinum
Skeletal (bones, joints, tendons) disease M. marinum, M. avium complex, M. kansasii, M. fortuitum group, M. abscessus, M. chelonae
Widespread (disseminated) infections, especially in people who are HIV-positive or have weakened immune systems HIV-infected person: M. avium, M. kansasii
Non-HIV-infected person: M. abscessus, M. chelonae
Catheter-related bloodstream infections M. fortuitum, M. abscessus, M. chelonae

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