MAC consists of M avium, Mycobacterium intracellulare, and other species of Mycobacterium that have not been classified. In the past, the separation of M avium from M intracellulare was difficult as it relied on serotyping. Therefore, it was common to refer to them as M avium-intracellulare or MAI.ptimal treatment should begin with clarithromycin (500 mg twice daily) plus ethambutol (approximately 15 mg/kg/day). Rifabutin may be added to this regimen, but the exact rifabutin dosing depends on other concomitant medications that might result in drug interactions.
The noun confidence means a feeling of trust and firm belief in yourself or others.. A person who walks into a room, smiling at everyone and not at all nervous about the speech she's about to give? She has confidence.
Definition of reliable for English Language Learners. : 1  able to be trusted to do or provide what is needed : able to be relied on. : 2  able to be believed : likely to be true or correct.