Journal
JOURNAL OF ANTIMICROBIAL CHEMOTHERAPY
Volume 69, Issue 6, Pages 1579-1581Publisher
OXFORD UNIV PRESS
DOI: 10.1093/jac/dku016
Keywords
bactericidal; lipoglycopeptides; ABSSSIs
Funding
- Medicines Company (Parsippany, NJ, USA) via the SENTRY Antimicrobial Surveillance Program platform
- Medicines Company
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To assess the oritavancin spectrum and activity against 2811 rarer species of coagulase-negative staphylococci (CoNS), streptococci and other Gram-positive species. A total of 2057 CoNS (14 species), 674 streptococci (7 groups) and 80 other Gram-positive species (3 genera) collected over a 5 year period as part of the SENTRY Program (2008-12) were included. Isolates were primarily identified by the participating laboratory and identification was confirmed by the reference monitoring laboratory (JMI Laboratories, North Liberty, IA, USA). Isolates were tested for susceptibility by broth microdilution following the CLSI M07-A9 and M100-S23 documents. Overall, oritavancin was active against all CoNS (MIC50/MIC90, 0.015/0.06 mg/L), with MIC50 values of a parts per thousand currency sign0.008-0.03 mg/L. Streptococci exhibited oritavancin MIC50 results of a parts per thousand currency sign0.008 mg/L, except for the Streptococcus bovis (0.03 mg/L), Streptococcus dysgalactiae (0.06 mg/L) and Streptococcus salivarius/vestibularis (0.06 mg/L) groups. Micrococcus spp., Listeria monocytogenes and Corynebacterium spp. had oritavancin MIC50 results of a parts per thousand currency sign0.008 mg/L. This study expands the oritavancin in vitro data against several species of Gram-positive organisms.
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