Journal of Antimicrobial Chemotherapy (2002) 50, 89-93
© 2002 The British Society for Antimicrobial Chemotherapy
In vitro activity of a novel oxazolidinone, AZD2563, against randomly selected and multiresistant Gram-positive cocci
Antibiotic Resistance Monitoring and Reference Laboratory, Central Public Health Laboratory, Colindale, London NW9 5HT, UK
Received 6 December 2001; returned 4 March 2002; revised 11 March 2002; accepted 19 March 2002
The in vitro activity of AZD2563, a novel oxazolidinone, was assessed against 595 Gram-positive cocci, comprising recent surveillance isolates and a collection of resistant (including multiresistant), epidemiologically diverse isolates. The MICs of AZD2563 for staphylococci, pneumococci and enterococci had narrow ranges, 0.252 mg/L, with modal MICs of 1 mg/L for staphylococci and pneumococci, and 12 mg/L for enterococci. AZD2563 was equally active against the surveillance isolates and those that had been selected for their multiresistance to other agents. The MICs of AZD2563 were either the same as those of linezolid or two-fold lower.
* Corresponding author. Tel: +44-20-8200-4400, ext. 4237; Fax: +44-20-8200-7449; E-mail: ajohnson{at}phls.org.uk
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