Washington [US], October 4 (ANI): The bacterium that causes tuberculosis has a cousin you've never heard of: MAC. This bacterial complex is everywhere, but most people never show symptoms. Yet some people get very, very sick. Researchers have now uncovered an immunologic defect that could explain this difference.
California [US], October 4 (ANI): Everybody occasionally breathes in Mycobacterium avium complex (MAC) bacteria, yet the majority of individuals don't become ill. These dangerous Mycobacterium tuberculosis cousins usually spend their brief, innocuous lives in food, soil, water, or dust.