This article waslast modified on
July 10, 2017.

A diverse group of rod-shaped bacteria that include Mycobacterium tuberculosis (which causes tuberculosis) and Mycobacterium leprae (which causes leprosy) and more than 100 different species found in the environment; the environmental mycobacteria may be referred to as nontuberculous mycobacteria (NTM), mycobacteria other than tuberculosis (MOTT), and/or atypical mycobacteria.