Theilerioses are a group of tickborne diseases caused by protozoan parasites of the Theileria genus. A large number of Theileria spp are found in domestic and wild ungulates in tropical and subtropical regions of the world.

Theileriosis in cattle is a tick-borne disease caused by haemoprotozoa Theileria spp. The disease is manifested by high fever, enlarged lymph nodes, severe anemia, and death in some infected animals. The disease is highly endemic in South Asian countries.

What is bovine theileriosis? Bovine theileriosis is caused by Theileria orientalis. This is a blood-borne parasite (protozoan) that can infect wild and domestic animals including cattle, sheep, water buffalo, yak, and other bovids. There are several types of T. orientalis found in the United States.

Theileriae are obligate intracellular protozoan parasites that infect both wild and domestic Bovidae throughout much of the world. They are transmitted by ixodid ticks, and have complex life cycles in both vertebrate and invertebrate hosts.

Theileria orientalis is a tickborne protozoon that infects red and white blood cells and causes bovine infectious anemia. Clinical signs of theileriosis are similar to anaplasmosis in cattle and include anemia, jaundice, and weakness.

Theileria is a genus of parasites that belongs to the phylum Apicomplexa, and is closely related to Plasmodium. Two Theileria species, T. annulata and T. parva, are important cattle parasites. [1] . T. annulata causes tropical theileriosis and T. parva causes East Coast fever. Theileria species are transmitted by ticks. [2] .

Theileriae are obligate intracellular protozoan parasites phylum Apicomplexa, order Piroplasmida, family Theileriidae, genus Theileria. They are most closely related to Babesia, from which they differ by having a developmental stage in leukocytes prior to infection of erythrocytes.

Babesia and Theileria are apicomplexan parasites that cause established and emerging diseases in humans, domestic and wild animals. These protozoans are transmitted by Ixodid ticks causing babesiosis or theileriosis, both characterized by fever, …

Theileriosis is a blood piroplasmic disease that adversely affects the livestock industry, especially in tropical and sub-tropical countries. It is caused by haemoprotozoan of the Theileria genus, transmitted by hard ticks and which possesses a complex life cycle.

More than a dozen species of Theileria occur in cattle, water buffalo, sheep and goats. Some tend to circulate with few or no clinical signs, but others can cause serious illnesses with high morbidity and mortality rates, especially in naive animals.