[Dynamics of isolation of mycobacterium tuberculosis during 2-stage standard chemotherapy].

Two-stage standard chemotherapy was performed in 149 newly detected patients with pulmonary tuberculosis, by isolating Mycobacteria. Within the first 2 months, the patients received 4 drugs: isoniazid, rifampicin, pyrazinamide, streptomycin or ethambutol. Treatment with two agents (isoniazid and rifampicin) was continued for 4 months. Mycobacterial isolation was stopped in 104 patients after 2 months of treatment, in other 26 after 3 months, which amounts to 80.2%. Higher therapeutical results were observed in patients who had isolated Mycobacteria resistant to 1 and even 2 drugs.