Table 1.
Daily mean (± SD) viremia titers (log pfu/mL serum) for Northern Cardinals (Cardinalis cardinalis) implanted with either corticosterone (n = 10) or an empty silastic tubule (n = 9) and inoculated with a 10 000 pfu of West Nile virus.
| Min (above 1.69 log pfu*), Max | Mean (SD) | ||||||
|---|---|---|---|---|---|---|---|
| Corticosterone | Placebo | Corticosterone | Placebo | ||||
|
Survived n = 5 |
Died n = 5 |
Survived n = 8 |
Died n = 1 |
Survived n = 5 |
Died n = 5 |
Survived n = 8 |
|
| 1 dpi | 3.2, 6.0 | 4.8, 6.2 | 3.2, 6.1 | 6.0 | 4.24 (1.06) | 5.4 (0.55) | 4.53 (1.16) |
| 2 dpi | 4.3, 7.2 | 6.8, 10.4 | 5.5, 9.0 | 10.1 | 5.68 (1.13) | 8.8 (1.39) | 6.58 (1.19) |
| 3 dpi | 4.8, 9.8 | 7.0, 12.1 | 5.4, 11.6 | 12.1 | 6.62 (1.9) | 10.3 (1.96) | 7.67 (2.28) |
| 4 dpi | 4.3, 5.4 | 6.4, 11.1 | 4.7, 10.5 | 8.3 | 4.9 (0.6) | 10.2 (2.1) | 6.29 (1.86) |
| 5 dpi | 3.7, 6.3 | 5.2, 10.4 | 1.7, 8.4 | 9.4 | 4.6 (1.11) | 8.74 (2.23) | 5.06 (2.46) |
Minimum and maximum viral titers are reported for all birds with detectable levels on the given day. dpi = days post-injection. *1.69 log pfu is detection limit of assay.