Anthelmintic Resistance in Ruminants: Who Cares?

Helminth parasites, or parasitic worms, cause severe disease in grazing ruminants. Anthelmintic drugs are frequently used to control these infections, but this has resulted in the emergence of anthelmintic-resistant (AR) helminth populations. AR has been detected in all major helminth species across Europe and globally and threatens effective control of parasitic infections.