Fig. 2From: A prospective study on insect bite hypersensitivity in horses exported from Iceland into SwitzerlandPercentage of horses that over time developed IBH (pink line, squares), remained healthy (blue line, diamonds) or were classified with unclear clinical diagnosis (green line, triangles). The total number of horses included in the study at the different times is presented in Table 2. T1 − T4 corresponds to the number of summers spent in Switzerland after importation from Iceland to Switzerland, i.e. one (T1), two (T2), three (T3) and four (T4) summers after importation to SwitzerlandBack to article page