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Activity of ceftolozane-tazobactam, ceftazidime-avibactam, meropenem-vaborbactam, cefiderocol and comparators against Gram-negative organisms causing bloodstream infections in Northern Italy (2019–2021): emergence of complex resistance phenotypes by Gabriele Bianco; Matteo Boattini; Sara Comini; Marco Iannaccone; Roberto Casale; Valeria Allizond; Anna Maria Barbui; Giuliana Banche; Rossana Cavallo; Cristina Costa is a Medicine article available to read on EtoBox.

What is Activity of ceftolozane-tazobactam, ceftazidime-avibactam, meropenem-vaborbactam, cefiderocol and comparators against Gram-negative organisms causing bloodstream infections in Northern Italy (2019–2021): emergence of complex resistance phenotypes about?

Herein we assessed the frequency of Gram-negative organisms causing bloodstream infections and activity spectrum of ceftolozane-tazobactam (CTZ), ceftazidime-avibactam (CZA), meropenem-vaborbactam (MEV), cefiderocol (CFDC) and comparators. Overall, 1605 Gram-negative isolates were consecutively collected during 2019-2021. Enterobacterales represented more than 75% and exhibited >90% susceptibility to CZA (97%), amikacin (91.8%) and meropenem (90.6%). ESBL-producing Enterobacterales isolates showed high rates of susceptibility towards CZA (100%), carbapenems (89.1-100%) and CTZ (84.9-95.1%). MEV displayed the highest activity against KPC-producing Enterobacterales (MIC, 0.75/4 mg/L; 92.9% susceptible) followed by CZA (MIC, ≤2/>8 mg/L; 89.3% susceptible), CFDC (MIC, 0.25/4 mg/L, 87.5% susceptible) and colistin (MIC, ≤2/4 mg/L, 83.9% susceptible). High proportions of isolates were susceptible to colistin (97.8%), CZA (97.2%), CTZ (96.1%) and amikacin (94.5%). CFDC showed potent activity against (MIC, 0.5/1 mg/L; 97.2% susceptible), multi-drug resistant (MIC, 0.25/1 mg/L; 96% susceptible), and (MIC, 0.12/0.25 mg/L; 100% susceptible).

Who reads Activity of ceftolozane-tazobactam, ceftazidime-avibactam, meropenem-vaborbactam, cefiderocol and comparators against Gram-negative organisms causing bloodstream infections in Northern Italy (2019–2021): emergence of complex resistance phenotypes?

Author

Gabriele Bianco; Matteo Boattini; Sara Comini; Marco Iannaccone; Roberto Casale; Valeria Allizond; Anna Maria Barbui; Giuliana Banche; Rossana Cavallo; Cristina Costa

Publisher

Informa UK Limited

Published

2022

Language

EN

Field

Medicine (Health Sciences)