Table 2 Protection efficiency of the immunized SPF chickens after challenged with the highly virulent NDV strain F48E9
Groups | Number of dead chickens/total number of chickens | Mortality (%) | Protection (%) |
|---|---|---|---|
O-2'-HACC/pFDNA i.n | 0/7 | 0 | 100 |
O-2'-HACC/pFDNA i.m | 0/7 | 0 | 100 |
Live attenuated NDV vaccine i.m | 0/7 | 0 | 100 |
pVAX I -F(o)-C3d6 i.m | 2/7 | 28.6 | 71.4 |
O-2′-HACC i.m | 7/7 | 100 | 0 |
PBS i.m | 7/7 | 100 | 0 |