Comparison of Etest, disk diffusion, and broth macrodilution for in vitro susceptibility testing of Rhodococcus equi.
MICs of erythromycin, clarithromycin, azithromycin, rifampin, gentamicin, and doxycycline against 101 isolates of Rhodococcus equi were determined by broth macrodilution, disk diffusion, and Etest. Categorical agreement ranged between 85.1 and 100%. Overall, the agreement between Etest and disk diffusion was better than the agreement between broth macrodilution and the agar-based methods.
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA.
Londa J
LJ
Berghaus
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA gigueres@uga.edu.
Steeve
S
Giguère
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA.
Kristen
K
Guldbech
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA.
Eleanor
E
Warner
Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA.
Ukachi
U
Ugorji
Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, Georgia, USA.
Roy D
RD
Berghaus
D000193:Actinomycetales Infections / Q000382:microbiology / Q000662:veterinary; D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D052978:Disk Diffusion Antimicrobial Tests; D006734:Horse Diseases / Q000382:microbiology; D006736:Horses; D008826:Microbial Sensitivity Tests / Q000379:methods*; D016929:Rhodococcus equi / Q000187:drug effects*
D000900:Anti-Bacterial Agents