Group | DPI* | Histological lesion score#(No. of piglets with lesions/no. of piglets examined) | ||||||
---|---|---|---|---|---|---|---|---|
 |  | Tonsil | ILN | Spleen | Lung | |||
 |  | a | b | a | b | a | b | c |
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
 | 3 | 1 (1/3) | 0 | 1 (2/3) | 1 (1/3) | 1 (2/3) | 0 | 1 (1/3) |
 | 7 | 2 (3/3) | 1 (1/3) | 1.5 (2/3) | 1 (2/3) | 1 (2/3) | 1.5 (2/3) | 1 (2/3) |
 | 10 | 3 (3/3) | 2.7 (3/3) | 1.7 (3/3) | 1.7 (3/3) | 2 (3/3) | 2 (2/3) | 3 (3/3) |
 | 14 | 3 (3/3) | 3 (3/3) | 3 (3/3) | 2 (3/3) | 3 (3/3) | 2 (3/3) | 4 (3/3) |
2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
 | 7 | 2 (1/3) | 0 | 1 (2/3) | 0 | 0 | 1 (1/3) | 1 (1/3) |
 | 10 | 2 (2/3) | 1.3 (3/3) | 1 (2/3) | 0 | 1 (2/3) | 0 | 1.3 (3/3) |
 | 14 | 1 (1/3) | 1 (2/3) | 1 (2/3) | 1 (2/3) | 1 (2/3) | 1.5 (2/3) | 1.3 (2/3) |