Table 3.
Proportion of animals with positive and negative serology results for viruses frequently associated with BRD1
| BRD virus | Serostatus at feedlot entry | Serostatus at first BRD pull | Combined serostatus2 | PCR swab result at first BRD pull | ||||
|---|---|---|---|---|---|---|---|---|
| Negative number (%) | Positive number (%) |
Negative number (%) |
Positive number (%) |
Negative number (%) |
Positive number (%) |
Negative number (%) |
Positive number (%) |
|
| BoHV-1 | 126 (97.7) | 3 (2.3) | 87 (64.0) | 49 (36.0) | 84 (65.1) | 45 (34.9) | 112 (81.8) | 25 (18.3) |
| BVDV-1 | 78 (60.5) | 51 (39.5) | 56 (41.2) | 80 (58.8) | 53 (41.1) | 76 (58.9) | 131 (95.6) | 6 (4.4) |
| BRSV | 25 (19.4) | 104 (80.6) | 13 (9.6) | 123 (90.4) | 5 (3.9) | 124 (96.1) | 131 (95.6) | 6 (4.4) |
| BPI3 | 37 (28.7) | 92 (71.3) | 18 (13.2) | 118 (86.8) | 16 (12.4) | 113 (87.6) | 136 (99.3) | 1 (0.7) |
| BAdV | 48 (37.2) | 81 (62.8) | 21 (15.4) | 115 (84.6) | 25 (18.3) | 112 (81.8) | — | — |
| BCoV | — | — | — | — | — | — | 132 (96.4) | 5 (3.7) |
1BRD-associated viruses: bovine alphaherpesvirus-1 (BoHV-1), bovine viral diarrhea 1 (BVDV-1), bovine respiratory syncytial virus (BRSV), bovine paraInfluenza-3 (BPI3), and bovine adenovirus (BAdV) and positive or negative nasal swab results for BoHV-1, BVDV-1, BRSV, BPI3, and bovine coronavirus (BCoV).
2Combined serostatus: negative or positive at both feedlot entry and first BRD pull.