Table 2.
Interferon-gamma release assay and milk culture result from cattle with positive and suspect CIST reactions.
| Animal status based on CIST result | CIST skin reaction increase (mm) | External characteristics of injection site | IFN-γ results | Milk culture results |
|---|---|---|---|---|
| Positive | 10.4 | A, skin condition | Positive | Negative |
| Positive | 6.7 | C | Negative | Negative |
| Positive | 5.6 | C | Negative | Negative |
| Positive | 5.4 | C | Negative | Negative |
| Positive | 4.8 | C, mild D | Positive | Negative |
| Positive | 4.7 | C | Negative | Negative |
| Positive | 4.6 | C | Negative | Negative |
| Suspect | 3.9 | C | Negative | Negative |
| Suspect | 3.9 | C | AV | Negative |
| Suspect | 3.8 | C | Negative | Negative |
| Suspect | 3.7 | F | Negative | Negative |
| Suspect | 3.6 | C | Negative | Negative |
| Suspect | 3.3 | C | Negative | Negative |
C, circumscribed; A, adhesions, D, diffuse; F, flat; AV, avian reactor.