Detection and Prevalence of Babesia spp. in American Black Bears ( Ursus americanus) from Eastern and Western North Carolina, USA.

Blood samples collected from American black bears (Ursus americanus) in eastern and western North Carolina, US, were analyzed for piroplasms. Piroplasmids were detected in 17% (23/132) of the animals surveyed. We detected a Babesia spp. previously identified in North American raccoons (Procyon lotor) and a maned wolf (Chrysocyon brachyurus); prevalence was 22% (14/64) and 13% (9/68) in the mountain and coastal black bear populations, respectively. The presence of the same Babesia species in black bears, raccoons, and a maned wolf suggests piroplasms may not be host specific.