Table 2 Results of the average duration of latent and incubation period for the inoculated pigs and time to onset of infectiousness and clinical signs for the contact pigs
| Â | Inoculated pigs | Within-pen contact pigs | Between-pen contact pigs |
|---|---|---|---|
Samples | Latent period* | Time to onset of infectiousness†| |
Blood ‡ | 4.8 (± 1.3) | 10.3 (± 1.6) | 13.9 (± 3.0) |
Blood § | 3.6 (± 1.0) | 10.4 (± 1.4) | 13.1 (± 3.0) |
Oral swab ‡ | 5.4 (± 1.3) | 8.5 (± 1.5) | 9.2 (± 1.5) |
Nasal swab ‡ | 5.4 (± 1.4) | 7.6 (± 2.6) | 11.3 (± 0.5) |
Rectal swab ‡ | 4.9 (± 1.4) | 9.3 (± 2.9) | 11.0 (± 1.6) |
|  | Incubation period* | Time to onset of clinical signs†| |
Clinical score >3 | 4.4 (± 1.0) | 9.9 (± 1.6) | 12.7 (± 2.0) |