Figure 4From: Circumstantial evidence for an increase in the total number and activity of borrelia-infected ixodes ricinus in the NetherlandsNumbers of questing ticks at Duin and Kruidberg 2000 – 2009. The population of larvae is shown in panel A. The population of nymphs plus adults is shown in panel B. A dot represents the number of ticks collected per drag (100 m2). Shaded area represents the best-fit for negative binomial distributions with the 95% confidence interval.Back to article page