Table 2.
Analyses of virulence of H11N9 strain and antibody response in chickens
| dpi | Infectivity of SH2 to chickens | IVPI | Serological conversion | |||
|---|---|---|---|---|---|---|
| Oropharynx (%)a | Cloaca (%)b | Lung (%)c | Conversion (%)d | HI titer range | ||
| 3 | 0 | 12.5 (1/8) | 0 | |||
| 10 | 0 | 25 (2/8) | 0 | 0 | 25 (2/8) | 1:8–1:16 |
a, b, cNumber shows percentage of viral positivity rate in oropharyngeal swab, cloacal swab, and lung tissue samples respectively and number in parenthesis represents number of samples in which virus was detected/number of samples examined
dNumber shows percentage of seroconversion rate and number in parenthesis represents number of chickens in which antibody was detected/number of chickens examined