Triclabendazole resistance involving Fasciola hepatica in sheep and goats during an outbreak in Almirante Tamandare, Paraná, Brazil.

Fasciolosis is a disease of extreme importance, occurring throughout Brazil, with great economic losses to the animal industry. This study aims to determine the effectiveness of treatment against Fasciola hepatica on a sheep and goat farm during an outbreak of fasciolosis, in which a high proportion of deaths occurred. The farm harbored 33 sheep and 60 goats of mixed breeds with varying weights and ages.