Table 4.
Pathogenicity of each virus for chicken via intranasal route
| Inoculated viruses | Seroconversion at 14 d.p.i.a | Clinical signs | Mortality (dead days) |
|---|---|---|---|
| rgY55 (H9N2) | 3/3b | 0/3 | 0/3 |
| rgY55sub (H9N2) | 3/3 | 0/3 | 0/3 |
| rgY55sub-P10 (H9N2) | 3/3 | 0/3 | 0/3 |
| rgVac1 (H5N1) | 0/3 | 0/3 | 0/3 |
| rgVac1sub (H5N1) | 1/3 | 0/3 | 0/3 |
| rgVac1sub-P2 (H5N1) | 0/1 | 2/3 | 2/3 (4, 11) |
| rgVac1sub-P3 (H5N1) | 1/1 | 3/3 | 2/3 (7, 8) |
| rgVac1ins (H5N1) | 1/3 | 0/3 | 0/3 |
| rgVac1ins-P2 (H5N1) | 1/1 | 2/3 | 2/3 (8, 11) |
| rgVac1ins-P3 (H5N1) | 0/1 | 2/3 | 2/3 (4, 6) |
a Examined for the survived chickens by HI test and ELISA.
b The number of positive animals/total