Fig. 1From: A nationwide survey of anthelmintic treatment failure on sheep farms in IrelandAnthelmintic classes used in drench tests for the years 2013 to 2015. Anthelmintic classes (BZ = benzimidazole; LV = levamisole; ML = macrocyclic lactone) used in drench tests in 2013 (n = 1492), 2014 (n = 1265), and 2015 (n = 1014). The number of tests is given in parentheses. Invalid tests (shown in red) were: 2.5% (38), 1.6% (20) and 2% (20) in 2013, 2014 and 2015, respectivelyBack to article page