Babesia bigemina

Babesia bigemina is a species of parasitic protozoan belonging to the apicomplexan subclass Coccidia. These organisms are known to infect the blood cells of vertebrates. B. bigemina is specifically responsible for causing tick fever in cattle.1

Babesiosis, the disease caused by Babesia species, is transmitted by ticks and affects both humans and animals. In humans, it is relatively rare, with B. microti being the most common cause of infection in the United States and China. Symptoms, when present, can include fever, fatigue, and headache, and can be severe in vulnerable individuals. Treatment typically involves specific medications. In animals, various Babesia species can affect a wide range of livestock and wild animals, with tick control being crucial for prevention.2