Fig. 4

BoHV-2 intra-herd seroprevalences calculated for farms keeping at least one BoHV-2 seropositive animal. BoHV-2 antibodies were determined by ELISA and in case of doubtful or increased reactivities, were confirmed by SNT. One diamond is attributed to one farm. White diamonds (♢) represent farms with one to ten animals tested (n = 20), grey ones () farms with eleven to 50 animals tested (n = 54), and black ones (♦) farms with more than 50 animals tested (n = 4). Solid horizontal lines indicate the median seroprevalence for the respective region. Dotted lines represent the median of intra-herd BoHV-2 seroprevalences calculated for all of Bavaria