DPI |
|---|
| Â | Â | 7 | 11 | 14 | Â | Â |
 Groups | 3 |  |  |  | 17 | 21 |
Group A | 0/5†| 0/5 | 0/5 | 0/5 | 0/5 | 0/5 |
Group B | 1/5 | 3/5 | 5/5 | 5/5 | 3/5 | 2/5 |
Group C | 3/5 | 4/5 | 5/5 | 5/5 | 5/5 | 3/5 |
Group D | 0/5 | 0/5 | 0/5 | 0/5 | 0/5 | 0/5 |
Group E | 0/5 | 2/5 | 4/5 | 5/5 | 5/5 | 5/5 |
- * Piglets in groups B, C and D were challenged with 106 TCID50 of HN-1/2008,
- YN-1/2008 PRRSV and GX-1/2008 cell-passaged viruses, respectively, and the piglets in group E were challenged with 104TCID50 GX-1/2008 field virus.
- †Serum samples were collected at 3, 7, 11, 14, 17 and 21 DPI, and viremia was tested by MARC-145 cell.
- Inoculations and nPCR.
