Fig. 5

Geographical distribution of Swedish dairy herds from which bulk tank milk was sampled in May and November 2013 for TBEV antibody analysis using modified indirect ELISA (mE). Each dot represents one dairy herd. The results from the mE analysis are divided into three groups represented by three different coloured dots. mE S/P % values of < 12 are considered negative, 12–19 doubtful, and ≥ 20 positive