Dissemination of IMP-1 Metallo-β-Lactamase–Producing <i>Acinetobacter</i> Species in a Brazilian Teaching Hospital

Abstract

Our results indicate that IMP-1-producing strains of Acinetobacter emerged in our institution in 1998. Since then, production of this MBL was detected not only in the major ribogroups of carbapenem-resistant Acinetobacter species but also among isolates that belonged to 17 distinct ribogroups, indicating that this important mechanism of antimicrobial resistance was disseminated among distinct clones.