Comparison of Etest to broth microdilution method for testing Streptococcus pneumoniae susceptibility to levofloxacin and three macrolides

S Hunt Gerardo, D M Citron, M C Claros, E J Goldstein
1996 Antimicrobial Agents and Chemotherapy  
When the Etest was compared to broth microdilution for susceptibility testing of Streptococcus pneumoniae, levofloxacin, erythromycin, and penicillin results correlated for both methods; azithromycin and clarithromycin showed discrepancies of > or = 2 dilutions for 95.8% and 31.5% of the isolates, respectively. Levofloxacin was active against 141 of 142 isolates (< or = 2.0 micrograms/ml), making it a potentially useful new fluoroquinolone.
doi:10.1128/aac.40.10.2413 fatcat:oyjdqtj4wzavng65freskqz3w4