Table 3.
Summary of clinical, pathological and virological observations on 7-week-old caesarian-derived-colostrum-deprived pigs infected with Virus X isolate (ISUYP604671), clinical specimen (serum) containing the virus or cell culture medium
| Pig ID | Inoculums | DPI at necropsya | Clinical signs | Lesionsb | Detection of Virus X in serum/tissue |
|---|---|---|---|---|---|
| 274 | Serum 604671 | 7 | No | Yes | Positive/positive |
| 275 | Isolate ISUYP604671 | 7 | No | Yes | Negative/positive |
| 302 | Isolate ISUYP604671 | 10 | No | No | Positive/positive |
| 303 | Serum 604671 | 14 | No | Yes | Positive/positive |
| 304 | Serum 604671 | 10 | No | Yes | Positive/positive |
| 675 | Isolate ISUYP604671 | 14 | No | Yes | Positive/positive |
| 273 | Medium | 14 | No | No | Negative/negative |
a
Day post inoculation.
b
Gross lesion: hemorrhagic, enlarged and swollen lymph node. Microscopic lesions: multifocal perivascular accumulations of mononuclear cells in meninges, mild edema with occasional degenerating neurons, interstitial pneumonia.