Bovine babesiosis is a tick-borne disease caused by protozoan parasites that infect the red blood cells. It is most often associated with infection by Babesia bigemina and B. bovis protozoa. The disease affects cattle living in tropical and subtropical climates worldwide.

Transmission
Babesia spp are transmitted to cattle through bites from infected ticks, usually the young nymph stage of the tick. Nymphs are mostly often found during the warmer months of the year (spring and summer) in wooded or grassy areas.