TABLE 2.

Genotypic diversity of C. jejuni isolates among farms, seasons, and management groups

Isolate groupNo. of:Index of diversitya
IsolatesSTsClonal complexes
All isolates29741170.829
Farms
    24618120.823
    4321270.786
    310319100.785
    1871690.752
    529420.123
Seasons
    Summer8823110.837
    Winter6317100.832
    Autumn4919110.827
    Spring9720130.820
Management groups
    Dry251180.887
    Lactating4715110.862
    Heifer6322110.839
    Unweaned1231480.825
    Weaned361780.803
  • a Simpson's index of diversity for isolates of each farm, season, and management group based on clonal complexes, in order of descending diversity.