TABLE 5.
Specificities and sensitivities of three brucellosis milk tests determined with 182 California field study goats and 8 goats experimentally infected with B. melitensis biotype 1
| Test (time of reading [h]) | Field study, specificity (%) (95% CI) | Exptl study, sensitivity (%) at the following wk postparturition (n)
|
|||||
|---|---|---|---|---|---|---|---|
| 1 (8) | 3 (8) | 5 (8) | 7 (7) | 9 (7) | 11 (7) | ||
| Milk ELISA | 99.5 (95.3, 100) | 100 | 100 | 88 | 86 | 100 | 86 |
| UBRT (1) | 99.5 (96.5, 100) | 13 | 0 | 0 | 0 | 0 | 0 |
| UBRT (3) | 97.3 (91.4, 99.3) | 50 | 25 | 25 | 14 | 29 | 29 |
| UBRT (4) | 96.2 (89.2, 98.9) | 50 | 25 | 38 | 14 | 29 | 43 |
| UBRT (8) | 91.8 (83.2, 96.3) | 63 | 38 | 50 | 29 | 43 | 43 |
| MBRT (1) | 99.1 (95.0, 99.9) | 0 | 0 | 13 | 14 | 21 | 14 |
| MBRT (3) | 94.5 (88.7, 98.1) | 63 | 38 | 38 | 14 | 43 | 43 |
| MBRT (4) | 92.8 (85.7, 97.3) | 88 | 38 | 38 | 14 | 43 | 43 |
| MBRT (8) | 83 (65.1, 93.7) | 88 | 50 | 63 | 43 | 57 | 43 |