Table 2

MICs of randomly selected C. jejuni colonies from the competition experiments

Pairwise competitionNo. of isolates with an Ery MIC (μg/ml)a of:No. of Erys and Eryr isolatesb at:Total no. of isolates (%)
dpi 3dpi 6dpi 10
0.250.512≥4ErysEryrErysEryrErysEryrErysEryr
Clonally related pairs
    700819/J.L.27001239011011011033 (100.0)0 (0)
    700819/J.L.272001574*72817122 (84.6)4 (15.4)
    700819/J.L.273012084*9210110129 (87.9)4 (12.1)
    Bd34-2/J.L.27256026011012014037 (100.0)0 (0)
    Bd41-3/J.L.273012029012015014041 (100.0)0 (0)
    Total52058798504562562162 (95.3)8 (4.7)
Isogenic pairs
    700819/T.L.10100121070708022 (100.0)0 (0)
    700819/T.L.10200314000809017 (100.0)0 (0)
    700819/T.L.1032077030706016 (100.0)0 (0)
    Total201142010022023055 (100.0)0 (0)
  • a *, The actual MICs of these isolates were ≥512 μg/ml.

  • b The isolates were randomly selected from plating at 3, 6, and 10 days postinoculation (dpi). The breakpoint for Ery resistance is ≥8 μg/ml.