Carbapenem-resistant and hypervirulent Klebsiella pneumoniae (CR-hvKp) strains have emerged while antimicrobial treatment options remain limited. Herein, we tested the in vitro activity of ceftazidime-avibactam and other comparator antibiotics against 65 CR-hvKp isolates. Ceftazidime-avibactam, colistin and tigecycline are highly active in vitro against CR-hvKp isolates (MIC90 ≤ 1μg/ml), including KPC-2-producing ST11 CR-hvKp. Based upon previous clinical experience and the in vitro data presented herein, we posit that ceftazidime-avibactam is a considered therapeutic option against CR-hvKp infections.
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