Table 4.
Selected input parameter values and basic reproductive rate, R0, estimated from the mathematical model. (Notes: R0=1/1−prevalence, where prevalence is the upper confidence interval for prevalence of individuals infectious for M. bovis as given in table 3. The lower confidence intervals for prevalence always gave estimates for R0 that were <1.0.)
| species | densities (measured in field) | demographic parameters (from literature) | R0 (computed from model) | |||
|---|---|---|---|---|---|---|
| mean | 95% confidence interval | maximum | birth rate day−1 (a) | death rate day−1 (b) | ||
| yellow-necked mice/100 m | 2.8 | 1.8, 3.8 | 22 | 0.0274 | 0.001 825 | 1.0142 |
| Wood mice/100 m | 7.2 | 6.4, 8.0 | 29 | 0.0274 | 0.001 825 | 1.0030 |
| Bank voles/100 m | 6.4 | 5.7, 7.1 | 29 | 0.0274 | 0.001 825 | 1.0040 |
| Field voles/100 m | 1.4 | 1.0, 1.7 | 12 | 0.0274 | 0.001 825 | 1.0122 |
| common shrews/100 m | 0.9 | 0.6, 1.2 | 12 | 0.002 16 | 0.008 120 | 1.0142 |
| all small rodents/100 m | 16.9 | 15.5, 18.4 | 49 | 0.0274 | 0.001 825 | 1.0030 |
| rats/0.25 ha | 7.5 | 3.1, 11.9 | 23 | 0.035 96 | 0.002 740 | 1.0504 |
| rats/0.25 ha | 17.8 | 6.7, 28.8 | 49 | 0.0288 | 0.002 740 | 1.0194 |
| squirrels/ha | 13.0 | 7.6, 24.4 | 46 | 0.0123 | 0.002 740 | 1.0204 |