Over the past decade, in Russian Federation there has been a steady increase in the incidence of MAC-infection in patients with HIV (the growth of nosology over the past five years, on average, was 57% per year). This determines the interest in this problem, especially in terms of the high inefficiency of treatment for the disease, the long term and cost of treatment. The history of the study of Mycobacterium Avium Complex-infection (MAC) originates in the early eighties in the United States, when the prognosis for a patient with AIDS and mycobacteriosis was extremely poor: mortality within one year after the detection of pathogen reached 71%. The role of infection in the thanatogenesis of patients was, however, established only by the beginning of the nineties. The detection of macrolide activity against the pathogen significantly improved the prognosis for patients, especially in combination with highly active antiretroviral therapy. The widespread introduction of antiviral drugs into practice and the ability to achieve immune reconstitution prevented the development of opportunistic infections, but did not solve the remaining issues of the treatment of the MAC-infection. The main one is the treatment of patients with a clarithromycin-resistant pathogen. There is no consensus on the sensitivity of non-tuberculous mycobacteria to antibacterials.