Table 1.
Bovine viral diarrhea virus subtypes in persistently infected cattle entering a feedlot for beef cattle
| Study | Number of Calves | Bovine Viral Diarrhea Virus 1a | Bovine Viral Diarrhea Virus 1b | Bovine Viral Diarrhea Virus 2a |
|---|---|---|---|---|
| 2004–2005 | 86 | (10) 11.6% | (67) 77.9% | (9) 10.5% |
| 2005–2006 | 302 | (33) 10.9% | (229) 75.8% | (40) 13.3% |
| 2007 Spring | 201 | (28) 13.9% | (161) 80.1% | (12) 6.0% |
| 2007 Summer | 184 | (13) 7.1% | (152) 82.6% | (19) 10.3% |
| 2007 Fall | 163 | (24) 14.7% | (124) 76.1% | (15) 9.2% |
| 2008 Spring | 180 | (28) 15.6% | (135) 75.0% | (17) 9.4% |
| 2008 Fall | 147 | (14) 9.5% | (122) 83.0% | (11) 7.5% |
| Total: 2004–2008 | 1263 | (150) 11.9% | (990) 78.4% | (123) 9.7% |