Journal of Antimicrobial Chemotherapy (2001) 48, 452-454
© 2001 The British Society for Antimicrobial Chemotherapy
Correspondence |
Susceptibility testing with linezolid by different methods, in relation to published general breakpoints
J Antimicrob Chemother 2001; 48: 452454
Antibiotic Resistance Monitoring & Reference Laboratory, Central Public Health Laboratory, 61 Colindale Avenue, London NW9 5HT, UK
Sir,
Susceptibility testing with linezolid ought to be straightforward, since its MIC distributions are narrow, spanning only three or four doubling dilutions. Nevertheless, interpretative problems arise because several agencies have proposed breakpoints of 2 mg/L (Table 1
), whereas some workers find MICs of 4 mg/L for many staphylococci and enterococci, including even control strains.1,2 The potential for confusion is exacerbated, especially in surveys (where MICs are most likely to be
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