Koch blue bodies (Theileriosis) in blood smear of HF cross cattle

Bovine theileriosis is a protozoal, tick-born, diseases, characterized by fever, hemolytic anemia, and jaundice. In Theileria annulata, both the schizont and piroplasm stages may be pathogenic. Schizonts are scarce in the peripheral blood of acutely sick animals and their presence in blood smears indicates a poor prognosis. However, schizonts can be easily detected in smears from lymph nodes, spleen and liver tissues obtained by needle biopsy of these organs