“…Analysis of fluke infections in cattle in Queensland showed prevalence ranging from 0.4 to over 50% (Roberts, 1982;Baldock and Arthur, 1985;Molloy and Anderson, 2006). Since the 1980s control of fasciolosis in Australia has relied on the use of Triclabendazole (TCBZ) (Boray et al, 1983) but resistance to this drench, first reported in Victoria (Overend and Bowen, 1995), has now been identified in livestock in south-eastern Australia (Brockwell et al, 2014), the United Kingdom, Europe and South America (Alvarez-Sanchez et al, 2006;Daniel et al, 2012;Gordon et al, 2012;Sargison, 2012;Ortiz et al, 2013;Robles-Pérez et al, 2013). Burdens of drug-resistant flukes of 20-34 were observed in cattle following treatment with TCBZ in Australia (Brockwell et al, 2014).…”