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Title: In vitro activity of the new ketolide telithromycin and other antibiotics against Streptococcus pneumoniae in Belgium
Authors: Verhaegen, Jan ×
Verbist, Ludo #
Issue Date: Nov-2001
Publisher: Acta clinica belgica
Series Title: Acta Clinica Belgica vol:56 issue:6 pages:349-53
Abstract: In Belgium more than 17% of the invasive pneumococci are not susceptible to penicillin, and more than 38% not to macrolides. The most prevalent mechanism of macrolide resistance in Europe is modification of the drug target site leading to cross-resistance to lincosamides and group B streptogramines (MLSB resistance). Telithromycin is the first antibiotic of the family of ketolides, which differ from erythromycin by having a 3-keto group instead of the neutral sugar L-cladinose. We tested the susceptibility of 637 pneumococci, recently isolated from patients in Belgium, to telithromycin and five other antibiotics. Data generated by this study show that telithromycin inhibits 98.4% of pneumococci at a breakpoint concentration of 1 mg/L in spite of a high percentage (> 30%) of strains with the MLSB constitutive type of resistance. Susceptibilities to the five comparator drugs were: penicillin (81.8%), tetracycline (67.0%), levofloxacin (98.9%), erythromycin (61.5%) and clindamycin (66.6%). Consequently telithromycin looks to have considerable potential for the empiric treatment of community-acquired respiratory tract infections.
ISSN: 1784-3286
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory of Clinical Bacteriology and Mycology
× corresponding author
# (joint) last author

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