Fatal Systemic Cladosporiosis in a Merino Sheep Flock |
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Authors: | Mehmet Haligur Ozlem Ozmen Gerry M Dorrestein |
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Institution: | (1) Department of Pathology, Faculty of Veterinary Medicine, University of Mehmet Akif Ersoy, 15100 Burdur, Turkey;(2) Diagnostisch Laboratorium NOIVBD, Wintelresedijk 51, 5507 PP Veldhoven, The Netherlands |
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Abstract: | Systemic cladosporiosis is described in 25 merino sheep from a flock consisting 250 animals. The fungal pneumonia appeared
after an intensive antibiotic treatment, because of a respiratory system disorder. The pen of the flock was humid and crowded,
and animals had signs of respiratory distress, coughing, fever and anorexia. All of the ill animals died, and necropsy was
performed on 10 sheep. The lesions were characterized by a multifocal pyogranulomatous pneumonia and an abomasitis. Severe
hemorrhages were observed in the lungs. At the histopathological examination, severe vasculitis with thrombosis was observed
in various organs, especially in the lungs and abomasums, suggestive for a hematogenous dissemination of the infection in
these organs. Numerous PAS-positive fungal elements were seen in the pyogranulomatous foci. Dark green fungal colonies were
seen in the blood agar and Sabouraud dextrose agar that were identified as Cladosporium cladosporioides. This report highlights that phaeohyphomycosis can cause a severe systemic and fatal disease in merino sheep under insufficient
management conditions. |
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