Characterization of mycobacteria from a major Brazilian outbreak suggests that revision of the taxonomic status of members of the Mycobacterium chelonae-M. abscessus group is needed.

Abstract excerpt

An outbreak of postsurgical infections caused by rapidly growing mycobacteria has been ongoing in Brazil since 2004. The degrees of similarity of the rpoB and hsp65 sequences from the clinical isolates and the corresponding sequences from both the Mycobacterium massiliense and the M. bolletii type strains were above the accepted limit for interspecies variability, leading to conflicting identification results....

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