Table 3. Cross-neutralization immune response of American Crows at 14 days postinfection with either KEN or KUN viruses.
| Sample no. | Inoculation | NY99 | KEN | KUN | Difference |
|---|---|---|---|---|---|
| Crow 8 | KEN | 640a | 640 b | NT | 0 |
| Crow 1 | KUN | 80 | NTc | 160 | 2-fold |
| Crow 2 | KUN | 80 | NT | 80 | 0 |
| Crow 3 | KUN | 160 | NT | 320 | 2-fold |
| Crow 4 | KUN | 40 | NT | 80 | 2-fold |
| Crow 5 | KUN | 40 | NT | 40 | 0 |
| Crow 6 | KUN | 20 | NT | 20 | 0 |
| Crow 7 | KUN | 80 | NT | 80 | 0 |
| Crow 8 | KUN | 80 | NT | 160 | 2-fold |
aValues represent the greatest reciprocal dilution in which >90% plaque inhibition was achieved as compared to sera-negative control cultures. bHomologous titers are depicted in bold print. cNT not tested; KEN, West Nile virus strain from Kenya; KUN (Kunjin), West Nile virus strain from Australia.