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Determination of colonization doses of selected isolates in chickens
| Type and isolate | ID50a (log 10) |
|---|---|
| Disparate | |
| Bovine | |
| 140-16 | 3.8 |
| 106-19 | 3.8 |
| 129-25 | <3 |
| 115-17 | 4.5 |
| Human | |
| 1997-11 | 3 |
| 1997-7 | <3 |
| 1998-5 | >6 |
| 1998-13 | >6 |
| 1999-9 | <3 |
| Majority | |
| Bovine | |
| 110-21 | <3 |
| 126-18 | 3.9 |
| 69-30 | 4 |
| 117-2 | <3 |
| 107-24 | 4 |
| Human | |
| 1997-13 | 5 |
| 1997-6 | <3 |
| 1999-6 | <3 |
| 1999-12 | 5 |
| 1997-4 | 3.8 |
ID50, 50% infective dose.
