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Clinical symptoms observed in sick animals at 117 farms
| Symptom | Number (%) of farms |
|---|---|
| Paralysis of hind legs | 54 (46) |
| Paraplegia, recumbence | 63 (54) |
| Wobbling | 15 (13) |
| Increased salivation | 12 (10) |
| Complicated breathing | 7 (6) |
| Cramps | 6 (5) |
| Abnormal position | 5 (4) |
| Flaccidness | 5 (4) |
| Decreased appetite | 4 (3) |
| Diarrhea | 1 (1) |
| Ocular discharge | 1 (1) |
| No description | 4 (3) |
