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Clin Microbiol Infect. 2009 Jun;15(6):588-92. doi: 10.1111/j.1469-0691.2009.02770.x. Epub 2009 Apr 27.

Clonal dissemination of two clusters of Acinetobacter baumannii producing OXA-23 or OXA-58 in Rome, Italy.

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JMI Laboratories, North Liberty, IA 52317, USA.


Thirty consecutive Acinetobacter baumannii isolates producing carbapenem-hydrolysing oxacillinases, OXA-23 or OXA-58, were recovered from patients hospitalized in Rome, Italy, between January and November 2007. Among these isolates, two clones not associated with the European clones I or II were observed. The oxacillinase-encoding genes were plasmid- or chromosome-borne. This study reports the dissemination of carbapenem-resistant A. baumannii belonging to two clones among several units in a single hospital and emphasizes the ability of A. baumannii to cause epidemic/endemic outbreaks and also to acquire various resistance genes circulating in the hospital environment.

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