Serologic Evidence of Exposure to Leishmania infantum in Captive and Free-ranging European Bison (Bison bonasus) in Poland, 2017-23 .

The European Bison (Bison bonasus) is the largest mammal in Europe and is classified as an endangered species. Leishmaniosis is a vector-borne disease caused by the protozoan Leishmania infantum. In general, this infection has been associated with dogs, cats, and humans.