Bronchopneumonia caused by Arcanobacterium pyogenes in Pampas Deer (Ozoteceros bezearticus).

Arcanobacterium pyogenes is a commensal bacteria of the mucous membranes of the respiratory and genital tracts of a number of domestic and wildlife animal species. However, following a stress or traumatic insults, A. pyogenes can become an opportunistic pathogen, associated with suppurative infections. Stress is an important risk factor for disease in all animals but especially in wild animals unaccustomed to human contact. A Pampas Deer (Ozoteceros bezearticus) fed in a conservation area, was found prostated and showing respiratory difficulties. This animal was taken to the Veterinary Clinical Hospital - CAV/UDESC, where it was treated but died two days later. Microscopic examination of lungs revealed areas focally extensive of necrosis associated with moderate infiltrates of polymorphonuclear surrounded by fibrous tissue. According to necropsy, microbiological cultive and DNA sequencing, the agent was classified as A. pyogenes. Characterizing the first reported case of Bronchopneumonia caused by A. pyogenes in Pampas Deer (Ozoteceros bezearticus) in Brazil.