Fluoroquinolone Resistance in Drug-Resistant Tuberculosis, Kharkiv, Ukraine, 2019-2023.

Rifampin-resistant Mycobacterium tuberculosis was identified by the World Health Organization as a pathogen of public health critical importance. During 2014-2023, an increase in fluoroquinolone resistance in rifampin-resistant M. tuberculosis from Kharkiv, Ukraine, was observed.