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Bovine coronavirus detection by semi-nested PCR assay from diarrhoeic and asymptomatic calves from Brazilian dairy and beef cattle herds
| Faecal consistency | Number of samples (%) | ||
|---|---|---|---|
| Positive | Negative | Total | |
| Diarrhoeic | 42 (19.0)a | 179 (81.0) | 221 |
| Normal | 2 (3.3) | 59 (96.7) | 61 |
| Total | 44 (15.6) | 238 (84.4) | 282 |
a p = 0.005
