MONDO_0005866 (Mycobacterium avium complex disease) can be described as follows. An infection that is caused by Mycobacterium avium. Also known as: MAC disease, Mycobacterium avium Complex, Mycobacterium avium complex caused disease or disorder, Mycobacterium avium complex disease or disorder, Mycobacterium avium complex infectious disease, Mycobacterium avium infection, infection due to Mycobacterium intracellulare.