Objective To analysis the causes of multi-drug resistant tuberculosis (MDR-TB) and to evaluate the effects of chemotherapy wiht lev-ofloxacin and other antituberculosis drugs.

• 目的分析多种耐药结核病(MDR-TB)的成因并观察左氧氟沙星联合其它二线抗结核药物治疗的近期疗效。