Table 3.
Virus titers in the respiratory tract 4 days after challenge with sw/IA/04 in naïve control pigs and sw/B/98 or sw/IA/04‐immune pigs
| Group | Range of virus titers (log10 TCID50/g) of positive pigs (number of positive pigs/total number of pigs) | |||||
|---|---|---|---|---|---|---|
| Nasal mucosa respiratory part | Nasal mucosa olfactory part | Tonsil | Trachea | Left lung | Right lung | |
| sw/IA/04‐control | 4·1–6·6 (4/4) | 4·3–6·0 (4/4) | 4·0–5·0 (4/4) | 5·5–6·5 (4/4) | 6·3–6·7 (4/4) | 6·2–7·2 (4/4) |
| sw/IA/04‐sw/IA/04 | <* | < | < | < | < | < |
| sw/B/98‐sw/IA/04 | < | < | < | 2·0 (1/4) | < | < |
*Virus titers below the detection limit (1·9 log10 TCID50/g for nasal mucosa, tonsil and trachea; 1·7 log10TCID50/g for lung) in all pigs.