Table 5.
Summary of virus isolation, PCR testing and viral sequencing from tissues of BRD treated calves recently vaccinated with MLV vaccine – necropsy cases from Groups 2 and 3.
| IDa | DOFb | Location |
Pathology | Tissue | BoHV-1 |
BVDV |
BoCV |
BRSV |
PI3V |
|||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feedlots | Vaccine | Diagnosis | Homogenate | Gel PCR | Culture | Sequence | q-PCR | q-PCR results | Gel PCR | Culture | Sequence | qRT-PCR | qRT-PCR results | Gel PCR | Culture | qRT-PCR | qRT-PCR results | Gel PCR | Culture | qRT-PCR | qRT-PCR results | Gel PCR | Culture | Sequence | ||
| 1839-9847 | 35 | Kansas | Vax 2 | Severe, fibrinosuppurative and necrotizing tracheitis, compatible with IBR | Trachea | Positive | Positive | Field strain | ,23.74c | Positive | Negative | Negative | , | Not detected | Negative | Negative | ,33.81 | Positive | Negative | Negative | , | Not detected | Negative | Negative | ||
| 7379-3498 | NAd | Texas | Vax 3 | Gross lesions-tracheitis | Lung | Positive | Positive | MLV Vax 1-2 | ,29.08 | Positive | Negative | Positive | MLV BVDV1a NADL | ,39.07 | Suspect | |||||||||||
| Fresh tissues only | Trachea | Positive | Positive | MLV Vax 1-2 | ,25.20 | Positive | Negative | Negative | Negative | Negative | ,37.43 | Suspect | Negative | Negative | , | Not detected | Negative | Negative | ||||||||
| 5360-9054 | NA | Kansas | Vax 3 | Acute to subacute, severe intersitital pneumonia, compatible with AIP | Lung | Negative | Negative | , | Not detected | Negative | Positive | Did not band on PCR | , | Not detected | Negative | Negative | ,35.26 | Suspect | Negative | Negative | , | Not detected | Negative | Negative | ||
| 7399-3408 | 39 | Kansas | Vax 1 | Severe fibrinosuppurative tracheitis, compatible with IBR | Trachea | Negative | Negative | , | Not detected | Positive | Positive | Twe bands on PCR | ,22.39 | Positive | Negative | Positve | , | Not detected | Negative | Negative | , | Not detected | Negative | Positive | PI3V C | |
| Acute to severe fibrinosuppurative bronchopneumonia and pleuritis | Negative | Negative | , | Not detected | Negative | Negative | , | Not detected | Negative | |||||||||||||||||
| 6242-7997 | 7 | Kansas | Vax 3 | Severe, acute fibrinosuppurative pleuropneumona with lobular necrosis and hemorrhage compatible with pulmonary Mannheimiosis. Histophilus somni and Mannheimia haemolytica isolated e | Lung | Negative | Positive | Field strain | , | Not detected | Positive | Positive | MLV BVDV1a Singer | ,29.08 | Positive | |||||||||||
| 7469 | 5 | Kansas | Vax 3 | No history, fresh tissues only | Lung | Negative | Negative | , | Not detected | Negative | Negative | , | Not detected | Negative | Positive | ,28.04 | Positive | Negative | Negative | , | Not detected | Negative | ||||
| 6250-7254 | 3 | Kansas | Vax 3 | Fibrinous pneumonia | Lung | Negative | Positive | Field strain | , | Not detected | Positive | Positive | MLV BVDV1a Singer | ,24.96 | Positive | Negative | Negative | , | Not detected | Negative | Negative | , | Not detected | Negative | Positive | PI3V B |
| Negative | Negative | , | Not detected | Positive | Negative | ,22.74 | Positive | Negative | Negative | |||||||||||||||||
The animal identification.
Days on feed.
Ct values.
Not available.
Testing at Kansas State University Veterinary Diagnostic Laboratory, Manhattan, Kansas.