Table 3.

Transmission of E. coli cocktail strains to six naı̈ve sheep

StrainPathotypeTimeNo. of naı̈ve animals positive/no. exposed to inoculated donors sheddingaE. coli at the following CFU/g:
<102102103104105106
86-24STECInitial1/20/12/20/1
2 wk0/21/12/21/1
2 mo0/20/10/20/1
3081STECInitial0/20/11/11/2
2 wk0/20/10/11/2
2 mo0/20/10/10/2
2041ETECInitial1/12/22/20/1
2 wk1/11/20/21/1
2 mo0/10/20/20/1
E2348/69EPECInitial1/40/10/1
2 wk0/40/10/1
2 mo0/40/10/1
637ETECInitial0/20/31/1
2 wk0/20/30/1
2 mo0/20/30/1
  • a At the time of exposure to a naı̈ve animal.