Emergence of Carbapenem-Resistant Non-baumannii Species of Acinetobacter Harboring a bla OXA-51 -Like Gene That Is Intrinsic to A. baumannii

Abstract

The bla _OXA-51 -like gene, originally intrinsic to Acinetobacter baumannii , had been detected in two clones of Acinetobacter nosocomialis and one clone of Acinetobacter genomic species “Close to 13TU.” These bla _OXA-51 -like genes, all preceded by IS Aba1 , were located on plasmids that might have originated with A. baumannii . The plasmid-borne IS Aba1 -- bla _OXA-51 -like confers a high level of carbapenem resistance and affects the accuracy of using bla _OXA-51 -like detection as a tool for differentiating A. baumannii from other Acinetobacter species.