Comparison of disk diffusion and agar dilution methods for erythromycin and ciprofloxacin susceptibility testing of Campylobacter jejuni subsp. jejuni.

Disk diffusion was a reliable, easy, and inexpensive method for testing the susceptibility of Campylobacter jejuni to erythromycin (215 susceptible and 45 resistant isolates) and to ciprofloxacin (154 susceptible, two intermediate, and 124 resistant isolates) using, respectively, an erythromycin disk and ciprofloxacin and nalidixic acid disks.