Table 3. Virus isolation from cloaca and laryngopharynx swabs of chickens after challenge with a highly pathogenic avian influenza virus, Kumamoto strain.
| Group | Chicken No. | Virus titers on the days after challenge (log10EID50/ml) | |||
|---|---|---|---|---|---|
| 2a) | 6a) | ||||
| C | L | C | L | ||
| Vaccine | 605 | - | - | - | - |
| 611 | - | - | - | - | |
| 613 | - | - | - | - | |
| 615 | - | - | - | - | |
| 617 | - | - | - | - | |
| 619 | - | - | - | - | |
| 624 | - | - | - | - | |
| 629 | - | - | - | - | |
| 635 | - | - | - | - | |
| 638 | - | - | - | - | |
| Negative control | 610b) | 3.0 | - | NT | 4.5 |
| 618c) | 3.5 | - | 6.8 | 3.0 | |
| 619c) | 2.8 | - | 5.8 | 2.5 | |
C; Cloaca swab, L; Laryngopharynx swab, NT; Not tested, -; The titer is below the limit of detection (0.5), a) Days after challenge, b) Dead on 4th day, c) Dead on 5th day.