Caneiras, CatiaCalisto, FilipaSilva, Gabriela Jorge daLito, LuisCristino, José MeloDuarte, Aida2018-11-162018-11-162018-11-06Antibiotics 2018, 7(4), 962079-6382http://hdl.handle.net/10451/35365© 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).Herein, we describe a case report of carbapenem-resistant Acinetobacter baumannii and Klebsiella pneumoniae isolates that were identified from the same patient at a Tertiary University Hospital Centre in Portugal. Antimicrobial susceptibility and the molecular characterization of resistance and virulence determinants were performed. PCR screening identified the presence of the resistance genes blaKPC-3, blaTEM-1 and blaSHV-1 in both isolates. The KPC-3 K. pneumoniae isolate belonged to the ST-14 high risk clone and accumulated an uncommon resistance and virulence profile additional to a horizontal dissemination capacity. In conclusion, the molecular screening led to the first identification of the A. baumannii KPC-3 producer in Portugal with a full antimicrobial resistance profile including tigecycline and colistin.engAntimicrobial resistanceGram-negative bacteriaK. pneumoniaeA. baumanniiKPC-3 carbapenemaseColistinTigecyclinejournal article10.3390/antibiotics7040096