Acinetobacter baumannii response to cefiderocol challenge in human urine Navegación de entradas Aztreonam-avibactam susceptibility testing for carbapenemase-producing Enterobacterales (CPE) in the National Reference Laboratory (NRL): 2019-2021 surveillance results Emergence of KPC-31, a KPC-3 Variant Associated with Ceftazidime-Avibactam Resistance, in a ST235 Pseudomonas Aeruginosa Clinical Isolate from Argentina