When would you add a third antibacterial agent in addition to macrolide and ethambutol for treatment of a patient with HIV and disseminated MAC?  

Add 3rd agent for patients failing or not on ART regimen when diagnosed with disseminated MAC Optimize failing ART. For treatment-naïve or not on ART, start ART ASAP after MAC therapy All our samples are sent to National Jewish Health in Denver, CO, right away for drug resistance testing I...