Table 1.
Number of nymphs testing positive for each of seven pathogens, statewide nymphal infection prevalence (NIP) and associated 95% confidence intervals calculated using maximum likelihood, Minnesota, May 31–June 30, 2015.
| No. positive sitesa (%) | No. positive ticks (%)b | NIP (95% CI) | |
|---|---|---|---|
| Borrelia burgdorferi sensu stricto | 53 (83) | 313 (25.24) | 25.24 (22.88–27.72) |
| Anaplasma phagocytophilum | 28 (44) | 78 (6.29) | 6.29 (5.04–7.75) |
| Babesia microti | 27 (42) | 58 (4.68) | 4.68 (3.60–5.96) |
| Ehrlichia muris subsp. eauclairensis | 13 (20) | 16 (1.29) | 1.29 (0.77–2.04) |
| Borrelia miyamotoi | 10 (16) | 13 (1.05) | 1.05 (0.59–1.74) |
| Borrelia mayonii | 7 (11) | 8 (0.65) | 0.65 (0.30–1.22) |
| Powassan virusc | 4 (6) | 6 (0.49) | 0.48 (0.20–1.00) |
a
The total number of collection sites where nymphs were recovered was 64.
b
The total number of nymphal ticks collected from 64 sites was 1240.
c
The total number of ticks tested for Powassan virus lineage II was 1233.