Аннотация:data not shown).This grouping was further confirmed by using the Diversilab technique (bioMe ´rieux), which indicated that the five GES-11-positive isolates belonged to three different clonal lineages, with three isolates belonging to a single clone (data not shown).Multilocus sequence typing performed as described previously 8 on the five GES-11-positive A. baumannii isolates revealed that they all belonged to ST2, being part of the worldwidedistributed clone II group.The current emergence of CRAB is a significant source of concern worldwide.Strains producing the carbapenemases OXA-58 and OXA-23 have been previously identified in Turkey.Here, only OXA-23 producers were identified, despite the fact that five clones were concomitantly identified in this hospital.The clonal diversity identified here revealed a polyclonal outbreak situation in the ICUs during that period of time.As previously reported, the overall mortality of the patients infected with those CRABs was very high, especially when they did not receive adequate empirical therapy.According to the resistance profile of the studied isolates, colistin was the most effective antimicrobial.While our work was in progress, another study reported the occurrence of GES-11 and GES-12 enzymes among A. baumannii isolates in Turkey. 9This highlights the need for implementation of adequate screening techniques to identify patients colonized by those multidrug-resistant strains.