Inoculation route | Calves | Days post-infection | |||||||
---|---|---|---|---|---|---|---|---|---|
−2 | 1 | 3 | 5 | 7 | 9 | 12 | 15 | ||
Intranasal | 1 | – | – | – | – | D: +  NS: +  | D: +  +  | – | – |
2 | – | – | D: +  NS: +  | – | – | – | – | – | |
3 | – | – | – | – | NS: +  | – | – | – | |
Oral | 1 | – | – | – | – | – | – | – | – |
2 | – | – | NS: +  | – | – | – | – | – | |
3 | – | – | D: +  | – | – | NS: +  | – | – |