Babesia bovis is an Apicomplexan single-celled parasite of cattle which occasionally infects humans.

The disease it and other members of the genus Babesia cause is a hemolytic anemia known as babesiosis and colloquially called Texas cattle fever, redwater or piroplasmosis.

It is transmitted by bites from infected larval ticks of the order Ixodida.

[1] It was eradicated from the United States by 1943, but is still present in Mexico and much of the world's tropics.

[3] Babesia bovis is transmitted transovarially, from the female ticks to the eggs, and can remain resident in tick populations for up to four years without infecting a vertebrate host.