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Table 2 Changes in the prevalence of antibodies against A. phagocytophilum in sheep and farms

From: Climate and environmental change drives Ixodes ricinus geographical expansion at the northern range margin

District Timespan Farms tested (n) Sheep tested (n) Positive sheep (n) Proportion positive sheep [95%CI]* Mean farm prevalence [90% range]
INLAND 1 6 379 139 0.37 [0.32-0.42] 0.33 [0.18 – 0.46]
  2 0 0 n.a n.a n.a
  3 16 436 124 0.28 [0.24-0.33] 0.26 [0.06 – 0.52]
COAST 1 12 520 252 0.48 [0.44-0.53] 0.59 [0.34 – 0.92]
  2 20 403 117 0.29 [0.26-0.35] 0.39 [0.00 – 1.00]
  3 12 339 210 0.62 [0.57-0.67] 0.61 [0.13 – 1.00]
FJORD 1 6 240 151 0.63 [0.56-0.69] 0.72 [0.14 – 1.00]
  2 9 326 249 0.76 [0.71-0.81] 0.78 [0.47 – 1.00]
  3 11 320 301 0.94 [0.91-0.96] 0.94 [0.80 – 1.00]
  1. In the 3 study regions during three different timespans: timespan 1; 1978–1989, timespan 2; 1990 – 1999; timespan 3: 2000–2008. *Confidence intervals obtained from assuming that the positive sheep are independent and following a binomial probability distribution.