Nosocomial Outbreak of a Multiresistant <i>Acinetobacter baumannii</i> Expressing OXA-23 Carbapenemase in Spain

Abstract

Carbapenem-resistant Acinetobacter baumannii isolates were obtained from 50 patients between July 2011 and July 2012 at the University Hospital A Coruña (NW Spain). These multidrug-resistant isolates, which belonged to a single clone, remained only susceptible to tigecycline, minocycline, and colistin and produced the carbapenem-hydrolyzing oxacillinase, OXA-23. This is the first reported outbreak of OXA-23-producing A. baumannii isolates in Spain.