Notes on Animal Diseases

Abstract

East Coast fever is a disease of cattle caused by the small protozoan parasite Theileria parva. The multiplying stages of this parasite, "Koch's blue bodies," are found in one of the types of white cells (lymphocytes) in the spleen, lymph glands, kidneys and other organs. These stages are occasionally found in the lymphocytes in the blood. The red cells of the blood usually contain other stages of the parasite, known as small piroplasms.