¹ Source: wiktionary.com
Medical Definition of Theileriosis
1. Protozoan disease of cattle, sheep, and goats caused by infection with protozoan of the genus Theileria, and transmitted by ixodid ticks. Synonym: theileriasis. Benign bovine theileriosis, theileriosis in cattle, a protozoan disease caused either by Theileria mutans (transmitted by ticks of the genus Amblyomma in Africa and the Caribbean) or by T. Taurotragi (transmitted by the ticks Rhipicephalus appendiculatus and R. Pulchellus in Africa). Malignant ovine and caprine theileriosis, a highly pathogenic protozoan disease of sheep and goats in southeastern Europe, northern Africa, and the Near and Middle East; it is caused by Theileria hirci and transmitted by the tick Hyalomma anatolicum anatolicum. (05 Mar 2000)