Fig. 1

Mean percentage optical density (OD450) ant-C. burnetii antibody using ELISA in dromedary camels slaughtered at the Al-Bawadi abattoir. The OD450 values of 208 positive camels were grouped into low, medium and strong based on the intensity of OD450 values. The intensity of the OD values among the three groups differed significantly (one-way ANOVA; F(2, 205) = 699.4; p < 0.0001).