Parasitic and External Diseases of Livestock

Livestock health problems caused by internal parasites such as flukes and worms, external parasites such as ticks and screwworm, and protozoal infections such as coccidiosis and trypanosomiasis. Belongs here: any livestock disease or pest whose recognized cause is a parasite, whether internal, external or protozoal. Does not belong here: a viral, bacterial or prion livestock disease, each grouped under its own heading, and a parasite of honeybees, grouped under Apiculture Pests and Diseases.