Table 4. Sensitivity and timeliness of PADI-web, ProMED and HealthMap (Agg.) in detecting primary outbreaks of African swine fever (ASF), foot-and-mouth disease (FMD), bluetongue (BTV) and avian influenza (AI) from January to June 2016.
Disease | Signals | PADI-web | ProMED | HealthMap (Agg.) |
---|---|---|---|---|
ASF | True positive | 7 | 11 | 6 |
False negative | 4 | 0 | 5 | |
Sensitivity | 64% | 100% | 55% | |
Average delay (days) | 2 | 2 | 5 | |
Range of delays (days) | 0 to 5 | 0 to 4 | -1 to 21 | |
FMD | True positive | 3 | 16 | 2 |
False negative | 13 | 0 | 14 | |
Sensitivity | 19% | 100% | 13% | |
Average delay (days) | 12 | 2 | 25 | |
Range of delays (days) | -3 to 28 | 0 to 4 | 14 to 35 | |
BTV | True positive | 1 | 4 | 0 |
False negative | 3 | 0 | 4 | |
Sensitivity | 25% | 100% | 0 | |
Average delay (days) | 5 | 2 | - | |
Range of delays (days) | 3 to 6 | 0 to 3 | - | |
AI | True positive | 16 | 30 | 18 |
False negative | 14 | 0 | 12 | |
Sensitivity | 53% | 100% | 60% | |
Average delay (days) | 2 | -6 | 1 | |
Range of delays (days) | -8 to 6 | -90 to 7 | -8 to 8 |