Table 1. Dose response for disease and intestinal colonization of rabbits by C. jejuni strains NCTC 11168 and ATCC 33560.

C. jejuni isolates	Dose of inocula (cfu)a	Diarrhea index	No. of C. jejuni-positive rabbit/total no. of rabbits by PCRb			Colonizationc
			jejunum	cecum	colon	jejunum	cecum	colon
NCTC 11168	1010	1.61	4/4	4/4	4/4	5.08 ± 0.25	6.27 ± 0.23	6.04 ± 0.34
	109	1.73	4/4	4/4	4/4	5.30 ± 0.13	6.62 ± 0.21	6.09 ± 0.87
	108	0.83	3/4	4/4	4/4	2.62 ± 2.27	4.55 ± 0.17	3.51 ± 0.91
	107	0.4	2/4	4/4	3/4	1.31 ± 1.18	2.64 ± 0.48	2.64 ± 0.84
	106	0.4	2/4	4/4	4/4	0.13 ± 0.22	2.79 ± 0.14	2.29 ± 0.43
	105	0	2/4	2/4	2/4	0 ± 0	0.78 ± 1.11	0.61 ± 0.86
	104	0	1/4	3/4	3/4	0 ± 0	1.22 ± 0.67	1.43 ± 0.48
	103	0	0/4	2/4	1/4	0 ± 0	0 ± 0	0 ± 0
	102	0	1/4	2/4	1/4	0 ± 0	0 ± 0	0 ± 0
ATCC 33560	1010	0.35	2/4	4/4	3/4	1.80 ± 1.56	4.00 ± 0.41	3.52 ± 0.30
	108	0	2/4	4/4	1/4	1.19 ± 1.03	3.25 ± 0.60	0.74 ± 1.28
	106	0	1/4	2/4	2/4	0.84 ± 1.46	2.13 ± 1.84	2.22 ± 1.93

^aRabbits were euthanized at 24 h postinoculation.

^bAll control animals were negative for C. jejuni by culture and PCR.

^cMean ± SD (n = 3) log₁₀ CFU/g.