Table 2. Fecal shedding of virus, clinical signs and immunohistochemistry findings after inoculation of pigs with porcine RVA strain HN03.
| Pig status, pig no. | Fecal shedding, PCR titer a), by hpi |
Onset of clinical signs, hpi | Hpi at euthanasia (after onset) | Antigen detection by IHC |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 12 | 24 | 36 | 48 | 60 | 72 | Duodenum | Proximal jejunum | Mid-jejunum | Distal jejunum | Ileum | |||
| HN03-inoculated | ||||||||||||||
| 7 | − | − | ND | ND | ND | ND | ND | None | 12.0 | − | − | − | − | − |
| 6 | − | 0 | ND | ND | ND | ND | ND | 16.0 | 18.0 (2) | − | +++ | ++++ | ++++ | +++ |
| 4 | − | 0 | −3 | ND | ND | ND | ND | 17.5 | 27.5 (10) | + | + | +++ | + | − |
| 2 | − | 0 | −3 | −3 | ND | ND | ND | 22.5 | 42.5 (20) | + | ++ | ++++ | ++ | + |
| 10 | − | 0 | −4 | −3 | ND | ND | ND | 15.0 | 45.0 (30) | + | +++ | ++++ | ++ | + |
| 1 | − | 0 | −3 | −2 | −2 | −2 | ND | 22.5 | 62.5 (40) | ++ | ++ | ++ | ++ | + |
| 3 | − | 0 | −3 | −3 | −2 | −1 | ND | 17.5 | 67.5 (50) | − | + | + | + | + |
| 9 | − | 0 | −4 | −3 | −2 | −2 | −2 | 15.0 | 75.0 (60) | − | + | +++ | + | + |
| Negative control | ||||||||||||||
| 5 | − | − | − | ND | ND | ND | ND | None | NA | − | − | − | − | − |
| 11 | − | − | − | − | − | − | − | None | NA | − | − | − | − | − |
−, negative; a) dilution 10n; hpi, hour post-inoculation; ND, not determined; NA, not applicable.