TABLE 2.
Birds with B. garinii spirochete-infected subadult ticks
| Bird species | No. of larvae | No. of nymphs | No. (%) of infected larvae | No. (%) of infected nymphs | ORa | 95% CI | No. (%) of infected ticks | n-I | No. (%) of birds with infected ticks |
|---|---|---|---|---|---|---|---|---|---|
| Blackcap (Sylvia atricapilla) | 215 | 60 | 1 (0.5) | 1 (1.7) | 3.6 | 0.2-58.9 | 2 (0.7) | 0.75 | 2 (0.6) |
| European robin (Erithacus rubecula) | 226 | 55 | 2 (0.9) | 2 (3.6) | 4.2 | 0.6-30.7 | 4 (1.4) | 0.67 | 4 (2.0) |
| Great tit (Parus major) | 135 | 33 | 20 (14.8) | 6 (18.2) | 1.3 | 0.5-5 | 26 (15.5) | 0.42 | 7 (10.0) |
| Dunnock (Prunella modularis) | 252 | 167 | 5 (2.0) | 4 (2.4) | 1.2 | 0.3-4.6 | 9 (2.1) | 0.92 | 7 (12.7) |
| Song thrush (Turdus philomelos) | 147 | 112 | 70 (47.6) | 60 (53.6) | 1.3 | 0.8-2.1 | 130 (50.2) | 0.34 | 25 (47.2) |
| Eurasian blackbird (Turdus merula) | 384 | 189 | 206 (53.6) | 109 (57.6) | 1.2 | 0.8-1.7 | 315 (55.0) | 0.45 | 24 (77.4) |
| Winter wren (Troglodytes troglodytes) | 138 | 7 | 8 (5.8) | 1 (14.3) | 2.7 | 0.3-25.3 | 9 (6.2) | 0.83 | 5 (15.2) |
| Whitethroat (Sylvia communis) | 18 | 11 | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |||
| Treecreeper (Certhia familiaris) | 4 | 6 | 1 (25) | 0 (0) | 1 (10) | 1 (5.6) | |||
| Grasshopper warbler (Locustella naevia) | 5 | 5 | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |||
| Gray wagtail (Motacilla cinerea) | 1 | 9 | 0 (0) | 1 (11.1) | 1 (10) | 1 (8.3) | |||
| Total | 1,547 | 676 | 312 (20.2) | 185 (27.2) | 1.5 | 1.2-1.8 | 497 (22.2) | 76 (7.0) |
a
OR for infection in nymphs compared to infection in larvae.