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From June to October 2019, 17 patients (six infected, 11 colonised) with an extensively drug-resistant (XDR) strain were notified from four Western Pomerania medical facilities. The XDR produced carbapenemases NDM-1 and OXA-48, and was only susceptible to chloramphenicol, tigecycline and cefiderocol. Synergistic activity was observed for the combination of aztreonam plus ceftazidime-avibactam. Genomic analyses showed all isolates belonged to sequence type 307. Control measures and further investigations are ongoing.


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