Correlation of erythromycin agar dilution susceptibility testing with disc diffusion susceptibility for Bordetella pertussis.
Agar dilution and disc diffusion susceptibility testing of erythromycin were performed for contemporary isolates of Bordetella pertussis with the use of charcoal media. Minimum inhibitory concentration (MIC) values ranged from < or = 0.016-0.5 mg/l and the MIC(50) and MIC(95) were 0.125 and 0.25 mg/l respectively. Disc diffusion zone sizes were interpretable after either 48 or 72 h of incubation and all inhibition diameters were > or = 37 mm.
Cimolai
N
N
Program of Microbiology, Virology, and Infection Control, British Columbia's Children's Hospital, 4480 Oak Street, Vancouver B.C. V6H 3V4, Canada.
Zaher
A
A
Trombley
C
C