The statistical tests for significant differences in haematological values in cats being CMhm positive/negative showed no significant differences (P > 0.5). One cat (Additional file 1: Table S1, no. 73) which was positive for Mhf, suffered from dehydration, weight loss and anorexia and the haematology of this cat showed abnormal values. Haemoglobin, haematocrit and total erythrocyte counts were decreased, whereas MCV was increased compared to normal reference interval (Table 2). The blood smear showed several epierythrocytic organisms on every erythrocyte, anisocytosis, polychromasia and regeneration with reticulocytes and metarubricytes. The smear also contained lymphoblasts.Table 2Haematology results for Mhf positive cat no. 73ParameterValueReference intervalTotal erythrocyte count (billion/L)1.495–10Haemoglobin (mmol/L)2.005–9.3Haematocrit (L/L)0.090.24–0.45Mean cell volume (MCV) (fL)60.440–57