Figure 2

Geographical distribution of 100 randomly selected Danish dairy herds tested for antibodies against Coxiella burnetii in the spring of 2008. The herds were categorized as either test positive (S/P > 40%) (Blue colour), test intermediate (30% ≤ S/P ≥ 40%) (Turquoise colour) or test negative (S/P < 30%) (White colour). The regional dairy herd density is presented by the following colours: Green: <0.07; Pale green: 0.07-0.10; Yellow: 0.10-0.14; Orange: 0.14-0.16; Red: 0.16-0.23; Purple: >0.23 herds/km².