Mycobacterium avium

**Definition:** A bacterium causing tuberculosis in domestic fowl and other birds. In pigs, it may cause localized and sometimes disseminated disease. The organism occurs occasionally in sheep and cattle. It should be distinguished from the M. avium complex, which infects primarily humans.

**Tree numbers:** - B03.510.024.962.500.300 - B03.510.460.400.410.552.552.300