TABLE 4.
Birds with B. afzelii 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 | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |||
| European robin (Erithacus rubecula) | 226 | 55 | 0 (0) | 1 (1.8) | 1 (0.4) | 1.0 | 1 (0.5) | ||
| Great tit (Parus major) | 135 | 33 | 1 (0.7) | 4 (12.1) | 13.4 | 1.3-133.3 | 5 (3.0) | 0.92 | 4 (5.8) |
| Dunnock (Prunella modularis) | 252 | 167 | 0 (0) | 10 (6.0) | 10 (2.4) | 1.0 | 6 (10.9) | ||
| Song thrush (Turdus philomelos) | 147 | 112 | 0 (0) | 3 (2.7) | 3 (0.5) | 1.0 | 2 (3.8) | ||
| Eurasian blackbird (Turdus merula) | 384 | 189 | 0 (0) | 11 (5.8) | 11 (1.9) | 1.0 | 8 (25.8) | ||
| Winter wren (Troglodytes troglodytes) | 138 | 7 | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |||
| Whitethroat (Sylvia communis) | 18 | 11 | 0 (0) | 3 (27.3) | 3 (10.3) | 3 (16.7) | |||
| Treecreeper (Certhia familiaris) | 4 | 6 | 0 (0) | 0 (0) | 0 (0) | 0 (0) | |||
| Grasshopper warbler (Locustella naevia) | 5 | 5 | 0 (0) | 1 (20) | 1 (10) | 1 (12.5) | |||
| Gray wagtail (Motacilla cinerea) | 1 | 9 | 1 (100) | 1 (11.1) | 2 (20) | 2 (16.7) | |||
| Total | 1.547 | 676 | 2 (0.1) | 34 (5.0) | 40.0 | 9.8-170.8 | 36 (1.6) | 27 (2.5) |
a
OR for infection in nymphs compared to infection in larvae.