The zoonotic potential of marine mammal strains of Brucella has been demonstrated both in natural and laboratory conditions. was detected in the brain tissue by PCR and Brucella antigen was demonstrated by immunohistochemistry in the brain and shoulder joint lesions. This led to suspect that there was a coinfecting pathogen, based on the characteristics of the inflammatory response and the lesion distribution pattern in the central nervous system. However, brain lesions diverged from those reported in systemic CeMV infection. Histopathological examination revealed the distinct features of a sub-acute systemic disease associated with Cetacean Morbillivirus (CeMV) infection. The main gross findings were severe multiorgan parasitism, thickened and congested leptomeninges, and (sero)fibrino-suppurative and proliferative arthritis of the shoulder joint. On physical examination, the dolphin showed a moderate body condition and was classified as code 2 (fresh dead) at the time of necropsy. Case presentationĪ juvenile female common bottlenose dolphin ( Tursiops truncatus) was found stranded alive in Lanzarote (Canary Islands, Spain) in 2005, but died shortly after. infection causing meningitis, meningoencephalitis or meningoencephalomyelitis have been extensively reported in striped dolphins ( Stenella coeruleoalba), and less frequently in other cetacean species. Concerning the nervous system, Brucella sp. isolation is increasingly reported in cetaceans, although associated pathologies, including lesions of the musculoskeletal and nervous systems, are less frequently described.
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