Pre-Multidrug-Resistant Mycobacterium tuberculosis Beijing Strain Associated with Disseminated Tuberculosis in a Pet Dog

ABSTRACT Resistance to isoniazid, ethambutol, and streptomycin was detected in a Mycobacterium tuberculosis strain, belonging to the Beijing family lineage, isolated from two nodule exudates of a Yorkshire terrier with generalized tuberculosis. This report alerts medical practitioners to the risk of dissemination of pre-multidrug-resistant tuberculosis (preMDR-TB) through exposure to M. tuberculosis-shedding pets.