High Rate of Tuberculosis Reinfection during a Nosocomial Outbreak of Multidrug-Resistant Tuberculosis Caused by Mycobacterium bovis Strain B

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Abstract
We present a study of a nosocomial outbreak of multidrug-resistant tuberculosis caused by Mycobacterium bovis in 31 patients, 30 of whom were infected with human immunodeficiency virus; all 31 died of progressive tuberculosis. All M. bovis strains had identical spoligotyping patterns and showed resistance to 12 antituberculosis drugs. Reinfection was suggested in 11 cases and confirmed in 4 by molecular typing methods. The causative strain was named “B strain.rd