Table 2. Percentage of Campylobacter jejuni and Campylobacter coli isolates from Ontario small poultry flocks that were resistant to nine selected antimicrobials, as determined by a broth microdilution technique, by poultry species.

		All poultry species	Chicken		Turkey		Other poultry speciesA
Antimicrobial		Campylobacter (N = 176)B	C. jejuni (N = 77)	C. coli (N = 64)	C. jejuni (N = 3)	C. coli (N = 18)	C. jejuni (N = 6)	C. coli (N = 5)
Class	AgentC	%D [CI]E	% [CI]	% [CI]	% [CI]	% [CI]	% [CI]	% [CI]
Aminoglycosides	GEN	0.57 [0.01–3.12]	0	1.56 [0.04–8.40]	0	0	0	0
Ketolides	TEL	3.98 [1.61–8.02]	0	10.94 [4.51–21.25]	0	0	0	0
Lincosamides	CLI	3.98 [1.61–8.02]	0	10.94 [4.51–21.25]	0	0	0	0
Macrolides	AZT	4.55 [1.98–8.76]	1.30 [0.04–7.02]	10.94 [4.51–21.25]	0	0	0	0
	ERY	3.98 [1.61–8.02]	0	10.94 [4.51–21.25]	0	0	0	0
Phenicols	FLO	0.57 [0.01–3.12]	0	1.56 [0.04–8.40]	0	0	0	0
Quinolones	CIP	8.52 [4.84–13.67]	3.90 [0.81–10.97]	9.38 [3.52–19.30]	0	16.67 [3.58–41.42]	50.00 [11.81–88.19]	0
	NAL	7.39 [3.99–12.30]	3.90 [0.81–10.97]	9.38 [3.52–19.30]	0	16.67 [3.58–41.42]	0	20.00 [0.50–71.64]
Tetracyclines	TET	56.25 [48.58–63.70]	76.62 [65.59–85.52]	35.94 [24.32–48.90]	100 [29.24–100]	50.00 [26.02–73.98]	0	40.00 [5.27–85.34]

^AWaterfowl (ducks) and game birds (pheasant and quail).

^BAntimicrobial susceptibility testing was conducted on all 176 isolates, including the three game bird isolates that were not speciated.

^CAZT = azithromycin; CIP = ciprofloxacin; CLI = clindamycin; ERY = erythromycin; FLO = florfenicol; GEN = gentamicin; NAL = nalidixic acid; TEL = telithromycin; TET = tetracycline.

^DPercentage of isolates resistant to the antimicrobial. Prevalence estimates were calculated by dividing the number of isolates resistant to an antimicrobial by the total number of isolates tested for the antimicrobial.

^ECI = Exact binomial 95% confidence interval for the percentage of isolates resistant to the antimicrobial.