Table 1.
Summary of trapping results per field trapping site.
| Site number | Site name | Absolute number of bank voles | Number of bank voles tested | Number of PUUV positive bank voles | Prevalence (%) | CI for prevalence | ||
| 2004 | Northern Belgium | 1 | Groot Schietveld | 32 | 20 | 0 | 0.00 | 0.00 – 16.68 |
| 2 | Driehoeksbos | 8 | 7 | 0 | 0.00 | 0.00 – 37.71 | ||
| 3 | St. Jansberg | 71 | 55 | 0 | 0.00 | 0.00 – 6.81 | ||
| 4 | Hustenveld | 70 | 33 | 0 | 0.00 | 0.00 – 10.14 | ||
| 5 | Jongenbos | 52 | 31 | 0 | 0.00 | 0.00 – 10.79 | ||
| 6 | Belle-Vue bos | 87 | 59 | 0 | 0.00 | 0.00 – 6.35 | ||
| 7 | Alserbos | 66 | 50 | 6 | 12.00 | 5.36 – 23.83 | ||
| 8 | Hornebos | 71 | 43 | 1 | 2.33 | 0.12 – 12.37 | ||
| Southern Belgium | 9 | Anderlues | 20 | 15 | 0 | 0.00 | 0.00 – 22.22 | |
| 10 | Fontaine-l'Evêque | 16 | 15 | 0 | 0.00 | 0.00 – 22.22 | ||
| 11 | Havelange | 20 | 18 | 4 | 22.22 | 7.97 – 47.14 | ||
| 12 | Hamois | 24 | 18 | 0 | 0.00 | 0.00 – 18.52 | ||
| 13 | Beaumont | 152 | 137 | 34 | 24.82 | 18.18 – 32.80 | ||
| 14 | Somme-Leuze | 90 | 69 | 5 | 7.25 | 2.90 – 15.78 | ||
| 15 | Chimay | 21 | 21 | 0 | 0.00 | 0.00 – 15.89 | ||
| 16 | Viroinval | 82 | 76 | 12 | 15.79 | 9.03 – 25.56 | ||
| 17 | Couvin | 40 | 40 | 2 | 5.00 | 0.90 – 17.10 | ||
| 2005 | Northern Belgium | 1 | Groot Schietveld | 15 | 13 | 0 | 0.00 | 0.00 – 22.51 |
| 2 | Driehoeksbos | 25 | 21 | 1 | 4.76 | 0.25 – 23.26 | ||
| 3 | St. Jansberg | 46 | 38 | 1 | 2.63 | 0.14 – 14.00 | ||
| 4 | Hustenveld | 15 | 9 | 0 | 0.00 | 0.00 – 32.33 | ||
| 5 | Jongenbos | 4 | 2 | 0 | 0.00 | 0.00 – 77.63 | ||
| 6 | Bellevuebos | 57 | 44 | 0 | 0.00 | 0.00 – 8.51 | ||
| 7 | Alserbos | 47 | 39 | 6 | 15.38 | 6.92 – 30.54 | ||
| 8 | Hornebos | 72 | 54 | 3 | 5.56 | 1.54 – 15.45 | ||
| Southern Belgium | 9 | Anderlues | 46 | 39 | 0 | 0.00 | 0.00 – 8.59 | |
| 10 | Fontaine l'Evêque | 62 | 55 | 22 | 40.00 | 27.78 – 53.66 | ||
| 11 | Havelange | 45 | 38 | 13 | 34.21 | 20.80 – 51.33 | ||
| 12 | Hamois | 27 | 22 | 7 | 31.82 | 15.18 – 54.65 | ||
| 13 | Beaumont | 84 | 77 | 34 | 44.16 | 33.03 – 55.87 | ||
| 14 | Somme-Leuze | 97 | 85 | 5 | 5.88 | 2.35 – 13.33 | ||
| 15 | Chimay | 145 | 129 | 28 | 21.71 | 15.32 – 29.78 | ||
| 16 | Viroinval | 155 | 129 | 13 | 10.08 | 5.65 – 16.57 | ||
| 17 | Couvin | 93 | 82 | 15 | 18.29 | 11.06 – 27.97 |
Number of trapped, tested and seropositive bank voles, and prevalence for each field trapping site. Site numbers refer to Figure 1. Data of southern Belgium correspond to the total number of bank voles captured in summer and autumn. Confidence intervals (CI) for prevalence were calculated using the Quantitative Parasitology free software [39].