TABLE 1.
Findings in neonatal suckling piglets inoculated with 1010 CFU of E. coli O157:H7 strain 86-24 (Stx2 positive) or E. coli O157:H7 strain 87-23 (Stx negative)
| Strain | Duration (h) | No. tested | No. dead at:
|
No. euthanatized in extremis at:
|
No. with A/E bacteriaa in:
|
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| ≤24 h | 25–36 h | ≤24 h | 25–36 h | Ileum | Cecum | Spiral colon | Distal colon | |||
| 86-24 | 22–36 | 30 | 2 | 2 | 11 | 15 | 14 | 17 | 15 | 10 |
| 87-23 | 48–72 | 8 | 0 | 0 | 0 | 0 | 2b | 7b | 8 | 5 |
a
A/E bacteria strained with E. coli O157:H7 antibody by immunoperoxidase technique.
b
Ileal and cecal tissues were collected from only seven piglets.