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Published on: October 25, 2015
Bovine abortion associated with Nocardia farcinica
Bhupinder Bawa1, Jianfa Bai, Mike Whitehair
1Department of Diagnostic Medicine/Pathobiology, College of Veterinary Medicine, Kansas State University, 1800 Denison Avenue, Manhattan, KS 66506, USA.
Abstract:
Nocardia spp. are recognized as a cause of bovine mastitis, cutaneous or subcutaneous abscesses, pneumonia, and disseminated disease. Abortion caused by Nocardia spp. is uncommon, and only a few sporadic cases have been reported in horses, pigs, and cattle. In all previous reports, of nocardial abortion, the causative agent was identified as Nocardia asteroides. The current report describes an aborted bovine fetus that was infected with Nocardia farcinica. Placenta, abomasal fluid, lung, liver, and kidney specimens from a late-term bovine abortion were submitted to the Kansas State Veterinary Diagnostic Laboratory. The gross findings included purulent exudate in the placenta and numerous abscesses in lung. Histologically, there was necrotizing and suppurative placentitis, pyogranulomatous pneumonia, and nephritis with numerous intralesional branching and filamentous, Gram-positive bacteria. Nocardia farcinica was isolated by bacteriology, and the bacteriology result was confirmed by 2 established polymerase chain reaction protocols and by DNA sequencing.
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