Table 1.
Extinction rate and mean time to extinction for each of the vaccination scenarios
| Criteria | Scenario | ||||||
|---|---|---|---|---|---|---|---|
| Control | 1 | 1 | 1 | 2A | 2B | 3 | |
| pv = 0.05p | pv = 0.21p | pv = 0.9p | |||||
| Extinction rate | 0.00 | 1 | 0.97 | 0.84 | 0.08 | 0.43 | 0.95 |
| Median time to extinction | - | week 272 | week 312 | week 390 | week 138 | week 276 | week 348 |
Control: no control programme; scenario 1: vaccination of heifers and cows for a 10-year period; scenario 2: vaccination of heifers and cows for a 3-year period with (scenario 2A) or without (scenario 2B) loss of immunity one year after the last vaccination; scenario 3: vaccination of heifers for a 10-year period