The tigecycline evaluation and surveillance trial; assessment of the activity of tigecycline and other selected antibiotics against gram-positive and gram-negative pathogens from France collected between 2004 and 2016
Abstract
BACKGROUND: A high level of antibiotic consumption in France means antimicrobial resistance requires rigorous monitoring. The Tigecycline Evaluation and Surveillance Trial (T.E.S.T.) is a global surveillance study that monitors the in vitro activities of tigecycline and a panel of marketed antimicrobials against clinically important Gram-positive and Gram-negative isolates.
METHODS: Annually clinically relevant strains were prospectively included in the survey through a national network of hospital-based laboratories. MICs were determined locally by broth microdilution using CLSI guidelines. Antimicrobial susceptibility was assessed using European Committee on Antimicrobial Susceptibility Testing breakpoints.
RESULTS: Thirty-three centres in France collected 26,486 isolates between 2004 and 2016. Enterococcus species were highly susceptible (≥94.4%) to linezolid, tigecycline and vancomycin. Staphylococcus aureus, including methicillin-resistant S. aureus (MRSA), were susceptible (≥99.9%) to tigecycline, vancomycin and linezolid. Between 2004 and 2016, 27.7% of S. aureus isolates were MRSA, decreasing from 28.0% in 2013 to 23.5% in 2016. Susceptibility of Streptococcus pneumoniae isolates was 100% to vancomycin, and > 99.0% to levofloxacin, linezolid and meropenem; 3.0% were penicillin-resistant S. pneumoniae (100% susceptibility to vancomycin and linezolid). Escherichia coli isolates were highly susceptible (> 98.0%) to meropenem, tigecycline and amikacin. The rate of…
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