Urinary mycobacterium szulgai infection in an immunocompetent patient

Mycobacterium szulgai is one of the nontuberculous mycobacteria (NTM) and rarely causes diseases in human beings, particularly in immunocompetent patients. Less than 1% of all cases of NTM infection are caused by M szulgai, but the incidence is continuously increasing. Although extrapulmonary infections have been reported, most M szulgai infections are associated with pulmonary diseases. However, to our knowledge, a urinary tract infection caused by M szulgai has never before been reported. Here we report an immunocompetent female who experienced a urinary tract infection caused by M szulgai and was successfully treated with 4 months of isoniazid, rifampin, and levofloxacin.