Antimicrobial Susceptibility Pattern and Prevalence of Extended-Spectrum beta-Lactamase Genotypes among Clinical Isolates of Acinetobacter baumanii in Tabriz, North-West of Iran

Background: Multidrug resistant (MDR) Acinetobacter baumanii strains have emerged as novel nosocomial pathogens threatening patients' lives, especially in intensive-care units (ICU). Various types of extended-spectrum beta-lactamases (ESBLs) are involved in conferring resistance to beta-lactam antibiotics, making their genotypic characterization an essential prerequisite to take proper preventative measures