Table 2.
Percent of feedlot beef carcass samples positive for specified bacteria by season
| Season — Level of analysis | E. coli | Salmonella | Campylobacter |
|---|---|---|---|
| Spring | |||
| % individual | 0.1 (1/835) | 0 (0/835) | 0.1 (1/835) |
| (95% CI) | (0.003 to 0.7) | NA | (0.003 to 0.7) |
| % positive pens | 5 (1/21) | 0 (0/21) | 5 (1/21) |
| (95% CI) | (0.1 to 23.8) | NA | (0.1 to 23.8) |
| Fall | |||
| % individual | 0 (0/818) | 0 (0/818) | 0 (0/818) |
| (95% CI) | NA | NA | NA |
| % positive pens | 0 (0/21) | 0 (0/21) | 0 (0/21) |
| (95% CI) | NA | NA | NA |
NA — Not available; could not be calculated. 95% CI — 95% confidence interval.