Table 7.
Prevalence of each of the five pathogens targeted by our testing algorithm in I. scapularis nymphs collected in June 2015 on public lands in two north-central Minnesota counties, and prevalence of ticks testing positive for two or more of these pathogens.
| Collection Site | Total no. nymphs |
No. positive for each pathogena (infection rate; 95% CI (%)) |
No. positive for multiple pathogensa (infection rate; 95% CI (%)) |
||||
|---|---|---|---|---|---|---|---|
|
Borrelia burgdorferi s.s. |
Borrelia mayonii |
Borrelia miyamotoi |
Anaplasma phagocytophilum |
Babesia microti | |||
| Clearwater | 115 | 36 (31.3; 23.4–40.2) | 1 (0.9; 0.0–4.1) | 0 (0.0; 0.0–3.2) | 14 (12.2; 7.1–19.1) | 13 (11.3; 6.5–18.1) | 15 (13.0; 7.8–20.1) |
| Hubbard | 76 | 31 (40.8; 30.2–52.0) | 3 (3.9; 1.0–10.3) | 2 (2.6; 0.5–8.3) | 6 (7.9; 3.3–15.6) | 3 (3.9; 1.0–10.3) | 9 (11.8; 6.0–20.6) |
| Total | 191 | 67 (35.1; 28.6–42.0) | 4 (2.1; 0.7–4.9) | 2 (1.0; 0.2–3.4) | 20 (10.5; 6.7–15.4) | 16 (8.4; 5.0–13.0) | 24 (12.6; 8.4–17.8) |
No., number; CI, confidence interval.
a
If we detected two or more target pathogens in a tick, that tick is included in the “No. positive” for each pathogen for which it was positive. It is also included in the count of ticks positive for multiple pathogens.