Table 1. Virus titers in tissues of infected ducks.
| Virus | Virus Titers (log10 EID50/1 ml) | ||||
|---|---|---|---|---|---|
| Lung | Trachea | Spleen | Kidney | Pancreas | |
| 29-1/H4N2 | 2/3(1.63 ± 0.18)a | 1/3 (1.75) | 2/3(1.38 ± 0.38) | 2/3(1.63 ± 0.53) | 3/3(1.83 ± 0.63) |
| MH-2/H4N6 | 3/3(1.58 ± 0.14) | 3/3(1.92 ± 0.29) | 3/3(1.33 ± 0.14) | 3/3(1.58 ± 0.14) | 3/3(2.00 ± 0.66) |
| 44-2/H4N6 | 0/3 (N.A.) | 2/3(1.25 ± 0.71) | 1/3(0.75) | 0/3 (N.A.) | 3/3(1.35 ± 0.26) |
| 46-2/H4N6 | 1/3(0.75) | 2/3 (1.50 ± 0.35) | 1/3(1.50) | 3/3(1.33 ± 0.14) | 1/3(1.25) |
| 67-2/H4N6 | 1/3(1.25) | 0/3 (N.A.) | 0/3 (N.A.) | 1/3(0.75) | 3/3(1.33 ± 0.14) |
| 408-1/H4N6 | 3/3(1.50 ± 0.00) | 3/3(1.50 ± 0.00) | 0/3 (N.A.) | 1/3(1.50) | 3/3(1.20 ± 0.26) |
| 420-2/H4N6 | 3/3(1.67 ± 0.52) | 3/3(1.33 ± 0.14) | 3/3(1.58 ± 0.14) | 3/3(1.75 ± 0.50) | 3/3(1.83 ± 0.38) |
| 421-2/H4N6 | 0/3 (N.A.) | 0/3 (N.A.) | 0/3 (N.A.) | 0/3 (N.A.) | 3/3(1.33 ± 0.14) |
Six shelducks (12 weeks-old) were inoculated intranasally with the viruses at a dose of 106 EID50. Three from each group were euthanized at 3 dpi and tissue samples (trachea, lung, pancreas, spleen, and kidney) were obtained for virus titration.
a2/3 infected ducks were positive for virus detection, and the titer values were shown as (mean ± SEM); N.A.: virus was not detected in any duck.