Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Direct assessment of infection of recombinant B viruses in chickensa
| Virus strain | No. of birds | Route | Morbidity | Mortality | HI serology (GMT) |
|---|---|---|---|---|---|
| rWT B/Ya88 | 5 | i.n. | 0/5 | 0/5 | 1/5 (<8) |
| rIBV-VN04HA | 5 | i.n. | 0/5 | 0/5 | 0/5 (<8) |
| rWT B/Ya88 | 10 | i.v. | 0/10 | 0/10 | 10/10 119 |
| rIBV-VN04HA | 10 | i.v. | 0/10 | 0/10 | 3/10 (<8) |
HI, hemagglutination inhibition assay; GMT, geometric mean titer; i.n., intranasal(i.n. dose, 105.7 50% egg infective doses [EID50]); i.v., intravenous.(i.v. dose, 106.9 EID50).
