Table 2. Active surveillance of Ixodes scapularis ticks in Ottawa, ON, 2017a.
| Site ID | Person-hours drag sampling (n) |
Ixodes scapularis abundance | Ixodes scapularis density per person-hour (n) |
Infection rate (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Adult | Nymph | Larva | Total | Nymph | Total | Bb | Bm | Ap | ||
| 1 | 8.4 | 15 | 0 | 0 | 15 | 0 | 1.8 | 13.3c | 0b | 0 |
| 2 | 6.9 | 0 | 1 | 0 | 1 | 0.3 | 0.2 | 0 | 0 | 0 |
| 3 | 6.0 | 0 | 0 | 0 | 0 | 0 | 0 | NA | NA | NA |
| 4 | 11.2 | 1 | 0 | 0 | 1 | 0 | 0.1 | 0 | 0 | 0 |
| 5 | 7.0 | 0 | 0 | 0 | 0 | 0 | 0 | NA | NA | NA |
| 6 | 7.7 | 1 | 0 | 0 | 1 | 0 | 0.1 | 0 | 0 | 0 |
| 7 | 8.0 | 10 | 6 | 1 | 17 | 1.6 | 2.4 | 43.8d | 0 | 0 |
| 8 | 8.3 | 0 | 2 | 3 | 5 | 0.5 | 0.6 | 0 | 0 | 0 |
| 9 | 7.2 | 23 | 2 | 0 | 25 | 0.6 | 3.5 | 32.0d | 0 | 0 |
| 10 | 8.5 | 25 | 4 | 0 | 29 | 1.0 | 3.4 | 34.5d | 0 | 3.5c |
| 11 | 13.2 | 11 | 11 | 4 | 26 | 1.6 | 2.0 | 31.8d | 0 | 0 |
| 12 | 5.3 | 12 | 0 | 0 | 12 | 0 | 2.3 | 8.33c | 0 | 0 |
| 14 | 3.8 | 0 | 0 | 0 | 0 | 0 | 0 | NA | NA | NA |
| 15 | 6.3 | 0 | 0 | 0 | 0 | 0 | 0 | NA | NA | NA |
| 16 | 5.7 | 8 | 0 | 11 | 19 | 0 | 3.4 | 50.0d | 0 | 0 |
| 17 | 4.3 | 0 | 0 | 0 | 0 | 0 | 0 | NA | NA | NA |
| 18 | 4.4 | 0 | 0 | 0 | 0 | 0 | 0 | NA | NA | NA |
| 19 | 4.0 | 6 | 0 | 0 | 6 | 0 | 1.5 | 50.0d | 0 | 0 |
| 20 | 4.0 | 46 | 0 | 0 | 46 | 0 | 11.5 | 43.5d | 2.2c | 2.2c |
| 21 | 1.2 | 15 | 0 | 0 | 15 | 0 | 12.9 | 13.3c | 0 | 0 |
| 22 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | NA | NA | NA |
| 23 | 1.5 | 18 | 0 | 0 | 18 | 0 | 12.0 | 5.56c | 0 | 0 |
| 24 | 2.0 | 3 | 0 | 0 | 3 | 0 | 1.50 | 0 | 0 | 0 |
Abbreviations: Ap, Anaplasma phagocytophilum; Bb, Borrelia burgdorferi; Bm, Borrelia miyamotoi; NA, not applicable; n, number
Note: Site 13 was deleted as it was outside the city limits
a Only adult and nymphal blacklegged ticks were tested
b Zeros (green in PDF) no infected ticks
c Infection rate 2–15% (yellow in PDF)
d Infection rate > 20% (red in PDF)