Table 1.
Seroprevalence for bovine respiratory syncytial virus (BRSV), bovine parainfluenza virus 3 (PIV-3), bovine corona virus (BCoV) and bovine virus diarrhea virus (BVDV) of calves in 118 Swedish dairy herds
| Virus | Sample 1, positive animalsa (%, n = 354) | Sample 2, positive animalsa(%, n = 345) | Negative to positiveb (%, n = 345) | Positive to negativec (%, n = 345) |
|---|---|---|---|---|
| BRSV | 106 (30) | 158 (46) | 64 (20) | 10 (3) |
| PIV-3 | 170 (48) | 227 (66) | 67 (19) | 9 (3) |
| BCoV | 120 (34) | 227 (66) | 113 (33) | 4 (1) |
| BVDV | 30 (8) | 38 (11) | 8 (2) | 2 (1) |
a
Number of seropositive animals detected in Sample 1 and Sample 2, respectively.
b
Number of animals that seroconverted between Samples 1 and 2.
c
Number of animals that converted from a positive COD value in Sample 1 to a negative COD value in Sample 2.