Fig. 5

BoHV-2 seroprevalences in relation to BoHV-1 ELISA results. Black diamonds (♦) indicate results when interpreted for holdings, open diamonds (♢) when individual animals are considered. Farms where at least one BoHV-2 seropositive animal is kept are classified “BoHV-2 seropositive”. With respect to results in the BoHV-1 ELISAs, holdings are categorized as follows: “BoHV-1 ELISA negative” (Trachitest negative), “Trachitest-positive” (Trachitest positive but gB-ELISA negative), “non-negative” (Trachitest and gB-ELISA positive or suspect, but gE-ELISA negative). The mean data for 406 holdings and 6801 cattle is given as “total”