TABLE 1

Prevalence of five pathogens and R. buchneri in I. scapularis ticks by seasona

AgentbNo. of positive ticks (% [95% CI])
Spring (n = 198 [140 A/58 N])Fall (n = 480) Total (n = 678
[620 A/58 N])
Borrelia burgdorferi
    A85 (61 [52–69])266 (55 [51–60])351 (57 [53–60])
    N16 (27 [17–41])16 (27 [17–41])
Borrelia miyamotoi
    A4 (3 [1–8])16 (3 [2–5])20 (3 [2–5])
    N0 (0 [0–8])0 (0 [0–8])
Anaplasma phagocytophilum
    A19 (14 [9–21])70 (15 [12–18])89 (14 [12–17])
    N1 (2 [0.1–10])1 (2 [0.1–10])
Babesia microti
    A27 (19 [13–27])61 (13 [10–16])88 (14 [12–17])
    N9 (15 [8–28])9 (15 [8–28])
POWV
    A5 (3 [1–8])6 (1 [0.5–3])11 (2 [1–3])
    N0 (0 [0–8])0 (0 [0–8])
Rickettsia buchneric
    A26 (81 [63–92])64 (89 [79–95])90 (86 [78–92])
    N21 (91 [70–98])21 (91 [70–98])
  • a Total prevalences for both spring and fall seasons are included (excluding R. buchneri). Values are means and 95% confidence intervals (CI).

  • b A, adults; N, nymphs.

  • c Thirty-two adults and 23 nymphs were tested for the spring season; 72 adult ticks were tested for the fall season.