Fig. 1

Microfilaria counting—Number of microfilariae/ml calculated from counting blood smears prior to treatment (0 days) and 30 days after treatment end (120 days). Treatment was performed with four consecutive monthly doses of avermectins (ivermectin-0.06–0.12 mg/kg or selamectin—6 mg/kg) following manufacturer’s guidelines (***P < 0.001, Wilcoxon test)