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| Disease stage | Species | Mean | Disease stage | Species | Mean |
|---|---|---|---|---|---|
| Latent | Cattle | 3.6 | Infectious | Cattle | 4.4 |
| Pigs | 3.1 | Pigs | 5.7 | ||
| Sheep | 4.8 | Sheep | 3.3 | ||
| Subclinical | Cattle | 2.0 | Clinical | Cattle | 2.4 |
| Pigs | 2.3 | Pigs | 3.4 | ||
| Sheep | 2.2 | Sheep | 1.1 |
The duration of the clinical state has been defined to equal the duration of the infectious stage minus the duration of the subclinical stage.
