Table 3.

Percentage of animals shedding CTX-M E. coli at three different shedding levels

Shedding level (CFU/g)% (Fraction positive) of animals shedding CTX-M
CattleChickenPigs
Low (1–199)54.3 (19/35)21.9 (7/32)35.0 (7/20)
Mediuma (200–9,999)37.1 (13/35)31.3 (10/32)25.0 (5/20)
Highb (≥1 × 104)8.6 (3/35)46.9 (15/32)40.0 (8/20)
  • a Equivalent to a high-density shedder (3).

  • b Equivalent to a supershedder (3).