Surveillance of ceftobiprole against Gram-positive and Gram-negative clinical isolates from 2018 from different European territories
2021
Stephen Hawser | Nimmi Kothari | Noëlle Jemmely | Nowel Redder
ABSTRACT: Objectives: Ceftobiprole is approved for the treatment of hospital-acquired and community-acquired pneumonia in 17 different European countries and is currently undergoing clinical trials in the USA. Methods: In this study, isolates were collected from hospital laboratories from 15 European countries during 2018 as part of an ongoing post-marketing surveillance study. Minimum inhibitory concentrations (MICs) were determined using European Committee on Antimicrobial Susceptibility Testing (EUCAST) broth microdilution methodology and were interpreted using 2019 EUCAST breakpoints. Results: Ceftobiprole was active (MIC, ≤2 mg/L) against 100% and 98.9% of methicillin-susceptible Staphylococcus aureus and methicillin-resistant S. aureus (MRSA) from 2018, respectively. Only six MRSA isolates (1.1%) were resistant to ceftobiprole and originated from four countries. Against Streptococcus pneumoniae, ceftobiprole was active (MIC, ≤0.5 mg/L) against 98.7% of isolates. Overall, 75.6% of Enterobacterales were susceptible, although isolate numbers in certain countries were notably low. In addition, based on non-species-related pharmacokinetic/pharmacodynamic breakpoints, 63.2% of Pseudomonas aeruginosa isolates were susceptible to ceftobiprole. Conclusion: Data for ceftobiprole for isolates from 2018 are very similar to studies performed on isolates from earlier years, showing that susceptibility to ceftobiprole has remained high.
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