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Table 2 Borrelia species distribution in infected I. ricinus ticks (n = 251) removed from humans

From: Long-term study of Borrelia and Babesia prevalence and co-infection in Ixodes ricinus and Dermacentor recticulatus ticks removed from humans in Poland, 2016–2019

Borrelia species distribution No of tested ticks No of positive ticks)a, b
B. afzelii B. garinii B. burgdorferi B. miyamotoi B. valaisiana B. lusitaniae B. spielmanii
Total 251 164 (65.3; 59.3–71.0) 22 (8.8; 5.7–12.7) 27 (10.8; 7.4–15.0) 21 (8.4; 5.4–12.3) 13 (5.2; 2.9–8.4) 1 (0.4; 0.0–1.8) 3 (1.2; 0.3–3.2)
Tick stage
 Larvae 3 2 (66.7; 17.7–96.1) 0 0 0 0 1 (33.3; 3.9–82.3) 0
 Nymphs 157 105 (66.9; 59.3–73.9) 11 (7.0; 3.8–11.8) 18 (11.5; 7.2–17.1) 12 (7.6; 4.2–12.6) 8 (5.1; 2.4–9.4) 0 3 (1.9; 0.5–5.0)
 Adults 91 57 (62.6; 52.4–72.1) 11 (12.1; 6.6–19.9) 9 (9.9; 5.0–17.3) 9 (9.9; 5.0–17.3) 5 (5.5; 2.1–11.6) 0 0
  1. aValues for positive ticks are given as the percentage with the 95% CI in parentheses
  2. bHierarchic logline analysis included Borrelia species prevalence × tick stages (larvae, nymph, adults): χ212 = 15.2; P = 0.231