Molecular characterization and genetic diversity of multidrug- and extensively drug-resistant A. baumannii clinical isolates

•Multi-drug resistant (MDR) strains are now a serious menace for the public health.•In this study, The frequency of MDR and XDR was equal to 74.80% and 33.07% respectively.•blaOXA-23-like and blaOXA-143-like were the most prevalent carbapenemases.•None of the isolates were positive for the blaOXA-58-like gene.•Based on ERIC-PCR results, A. baumannii isolates were clustered into seven groups.