Table 1.

Colonization of day-old chicks after inoculation with three C. jejuni strains in dilution series of 24-h-old bacteria or under storage in saline suspensions at days 1, 9, 19, 30, and 39

Strain (source)Serotype and flatypeDose-response experimentsStorage experiments
Initial count (CFU/ml) in suspensionInoculation dose (CFU/ml)No. of chicks colonized/no. of chicks inoculatedDay of storageCFU/ml of suspensionInoculation dose (CFU/ml)No. of chicks colonized/no. of chicks inoculated
G97-76595 (chicken)O:27, flaAtype C1.0 × 1081.0 × 1069/911.6 × 1081.6 × 10710/10
1.0 × 1046/993.1 × 1083.1 × 10710/10
1.0 × 1021/9191.0 × 1061.0 × 1050/10
1.0 × 1000/9302.0 × 1022.0 × 1010/10
1.0 × 10−10/9393.0 × 10−13.0 × 10−20/10
Kl-5133 (human)O:2, flaA type B8.8 × 1078.8 × 1068/912.2 × 1072.2 × 10610/10
8.8 × 1059/992.3 × 1072.3 × 10610/10
8.8 × 1034/9194.6 × 1044.6 × 1030/10
8.8 × 1010/9304.3 × 1024.3 × 1010/10
8.8 × 10−10/9399.0 × 10−19.0 × 10−20/10
Pen-6 (laboratory adapted)O:6, flaA type A5.7 × 1075.4 × 1054/913.4 × 1083.4 × 1077/10
5.4 × 1030/993.7 × 1073.7 × 1069/10
5.4 × 1010/9192.7 × 1062.7 × 1051/10
5.4 × 10−10/9301.5 × 1031.5 × 1020/10
5.4 × 10−30/939<1.0 × 10−1<1.0 × 10−20/10