Abstract
Cefiderocol (FDC) and ceftazidime-avibactam (CZA) are among the latest generation of commercialized antibiotics against carbapenem-resistant Gram negatives. However, emergence of CZA resistance is being increasingly reported, involving different KPC variants in Enterobacterales. By analyzing two CZA-resistant KPC-3 clinical variants, KPC-41 and KPC-50, we showed that KPC-41, and to a lesser extent KPC-50, may also have an impact on susceptibility to FDC leading to a cross-resistance. This feature highlights that a susceptibility testing to FDC is mandatory prior any clinical use of FDC for treating infections due to KPC producers.
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This work was financed by the University of Fribourg, Switzerland, the NARA, and by the Swiss National Science Foundation (grant FNS 310030_1888801).
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Poirel, L., Sadek, M., Kusaksizoglu, A. et al. Co-resistance to ceftazidime-avibactam and cefiderocol in clinical isolates producing KPC variants. Eur J Clin Microbiol Infect Dis 41, 677–680 (2022). https://doi.org/10.1007/s10096-021-04397-x
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DOI: https://doi.org/10.1007/s10096-021-04397-x