Table-1.
Immune protection against virulent Newcastle disease virus.
| Group | Hemagglutination inhibition antibody titers (log2) | Clinical signs /total | Dead/total | Protection rate* (%) | ||
|---|---|---|---|---|---|---|
| Pre-infection | 7 days p.c | 14 days p.c | ||||
| Vaccine A (A2) Marcol | 4.6 | 6 | 9 | 0/10 | 0/10 | 100 |
| Unvaccinated (A3) control | 0^ | - | - | 10/10 | 10/10 | 0 |
| Vaccine B (B2) Montanide ISA70 | 5.5 | 7.5 | 9.6 | 0/10 | 0/10 | 100 |
| Unvaccinated (B3) control | 0^ | - | - | 10/10 | 10/10 | 0 |
Pre-infection=Two weeks PV, p.c=Post-challenge,
*
Protection definition: Survival without signs of clinical infection not shedding. ^Unvaccinated control chickens died on day 4th p.c