What is Mycobacterium avium complex (MAC) and what are its symptoms?

What is Mycobacterium avium complex (MAC) and what are its symptoms?



Answer: A mycobacterium ubiquitous in water and soil, but has become a common pathogen in late-stage AIDS patients (CD4 count <50). Symptoms include chronic wasting, fever, weight loss, marrow suppression, and chronic watery diarrhea. May also cause respiratory disease mimicking tuberculosis especially in chronic obstructive pulmonary disease (COPD) patients.



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