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Specificity and sensitivity of isotypes/PPA-ELISAs.
| PPA | Specificity | Sensitivity | ||
|---|---|---|---|---|
| ELISA | Subclinically | Clinically | Total | |
| IgG | 100.0% | 23.1% | 92.9% | 47.5% |
| IgG1 | 94.7% | 11.5% | 57.1% | 27.5% |
| IgG2 | 92.1% | 53.8% | 85.7% | 65.0% |
The specificity of isotypes/PPA-ELISAs was calculated as % of cattle from the healthy control group testing negative. The sensitivity of each test was estimated as % of infected cattle (subclinically infected, clinically infected, or both) testing positive.
