Table 1.
The minimum infection rate [42] of Ixodes ricinus ticks at the TBEV foci
| Number of ticks sampled | Positive pools/total pools | Adults | Nymphs | Mix | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Site | Year | Adult | Nymph | Larva | Adult | Nymph | Mix a | MIR | LL | UL | MIR | LL | UL | MIR | LL | UL |
| Raron | 2010 | 875 | 872 | 2 | 11/135 | 0/45 | 2/21 | 1.26 | 0.63 | 2.24 | 0.00 | 0.00 | 0.42 | 0.74 | 0.39 | 1.27 |
| Salgesch | 2010 | 271 | 218 | 0 | 0/11 | 1/6 | 0/0 | 0.00 | 0.00 | 1.35 | 0.46 | 0.01 | 2.53 | 0.20 | 0.01 | 1.13 |
| Lufu-Niedergesteln | 2011 | 38 | 66 | 0 | 1/2 | 1/2 | 0/0 | 2.63 | 0.07 | 13.81 | 1.52 | 0.04 | 8.16 | 1.92 | 0.23 | 6.78 |
| Raron | 2011 | 156 | 124 | 0 | 2/30 | 0/8 | 0/0 | 1.28 | 0.15 | 4.55 | 0.00 | 0.00 | 2.93 | 0.71 | 0.08 | 2.56 |
| Rittergut-Visp | 2011 | 73 | 10 | 0 | 2/6 | 0/1 | 0/0 | 2.74 | 0.33 | 9.55 | 0.00 | 0.00 | 30.85 | 2.41 | 0.29 | 8.44 |
| Salgesch | 2011 | 320 | 1012 | 0 | 1/38 | 2/23 | 0/0 | 0.31 | 0.01 | 1.73 | 0.2 | 0.02 | 0.72 | 0.23 | 0.05 | 0.66 |
| Brig | 2013 | 397 | 213 | 1 | 1/19 | 0/4 | 0/1 | 0.25 | 0.01 | 1.40 | 0.00 | 0.00 | 1.72 | 0.16 | 0.01 | 0.91 |
| Pletschen_Susten | 2013 | 7 | 2 | 0 | 0/0 | 0/0 | 1/1 | 0.00 | 0.00 | 40.96 | 0.00 | 0.00 | 84.19 | 11.11 | 0.28 | 48.25 |
| Raron | 2013 | 261 | 239 | 0 | 0/14 | 0/6 | 1/1 | 0.00 | 0.00 | 1.40 | 0.00 | 0.00 | 1.53 | 0.20 | 0.01 | 1.11 |
| Salgesch | 2013 | 222 | 434 | 6 | 1/14 | 1/9 | 0/1 | 0.45 | 0.01 | 2.49 | 0.23 | 0.01 | 1.28 | 0.30 | 0.04 | 1.09 |
| Total | 2620 | 3190 | 9 | 19/269 | 5/104 | 4/25 | 0.73 | 0.44 | 1.13 | 0.16 | 0.05 | 0.36 | 0.48 | 0.32 | 0.7 | |
LL = lower 95% confidence limit.
UL = upper 95% confidence limit.
amixture of adults, nymphs and larvea.
For each of the ten combinations of site and year, the tick sample sizes are shown for each stage (adult, nymph, larva). The proportion of TBEV-positive pools is shown for pools of three different stage compositions: adults, nymphs, and mixture (adults, nymphs, larvae). The MIR is shown separately for adults, nymphs, and mixture (adults, nymphs, larvae). The MIR and the 95% confidence limits are expressed as a percent.