Table 3. Mean sensitivity (CSe) and costs (± SE) of alternative surveillance system components (SSC) for bovine brucellosis in France at design prevalence (PH*) of 0.10, 0.05% and 0.02%.
SSC include clinical surveillance (CLIN), programmed surveillance (PROG), and introduction controls (INTRO).
| SSC | CSe—PH* = 0.05%a | CSe—PH* = 0.02% | CSe—PH* = 0.01% | Cost (million €) |
|---|---|---|---|---|
| CLIN1 –notification of every abortionb | 97.0 ± 4.5 | 82.1 ± 13.1 | 60.3 ± 16.1 | 2.91 ± 0.62 |
| CLIN2 –notification of series of two or more abortions | 68.4 ± 44.3 | 59.1 ± 38.3 | 44.9 ± 31.7 | 0.52 ± 0.37 |
| PROG1 –testing of 20% of bovines in 100% of herdsb,c | 99.5 ± 0.9 | 91.9 ± 6.6 | 76.3 ± 10.1 | 8.61 ± 1.12 |
| PROG2 –beef: testing of 100% of bovines in a random sample of 20% of herds, dairy: sampling of 100% of herds | 99.5 ± 0.8 | 90.9 ± 6.5 | 73.2 ± 8.9 | 5.60 ± 0.83 |
| PROG3 –testing of 100% of bovines in a random sample of 20% of herds | 97.4 ± 3.8 | 81.6 ± 11.6 | 62.0 ± 11.5 | 5.22 ± 0.81 |
| PROG4 –testing of 100% of bovines in a sample of 20% of herds from the high-risk group | 100.0 ± 0.1 | 98.7 ± 2.5 | 93.8 ± 6.3 | 5.28 ± 0.83 |
| PROG5 –testing of 20% of bovines in a sample of 20% of herds from the high-risk groupc | 96.8 ± 3.7 | 78.4 ± 10.8 | 57.3 ± 11.1 | 1.73 ± 0.22 |
| INTRO1 –introduction controlsb | 30.2 ± 13.0 | 19.2 ± 6.2 | 17.2 ± 5.0 | 3.36 ± 0.59 |
a PH*, design prevalence
b SSC of the current surveillance system in France
c The sampling of 20% of cattle within the herd was applied only to blood serology surveillance