Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay
An outbreak of pneumonia associated with bovine respiratory syncytial virus occurred in July 2012 in a calf-rearing farm in Flores County is described. Morbidity and mortality were 6.71% and 6.57% respectively. Main clinical symptoms were cough, dyspnea, tachypnea, nasal and ocular discharge and fever. Necropsy was performed in two animals which died from respiratory failure. Gross findings in both were antero-ventral consolidation of lungs with caudo-dorsal emphysema and edema. Histopathological study showed bronchointersticial pneumonia, necrotizing bronchiolitis and exudative alveolitis with syncytial cells in lungs. Lung sections, fixed in formalin, were analyzed by immunohistochemistry. Using this technique it was found positive labeling with anti-BRSV in bronchiolar epithelial cells and syncytial cells, confirming the presence of virus-associated pneumonia lesions.
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Sociedad de Medicina Veterinaria del Uruguay (SMVU)
2013
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rev-smvu-uy-article-2462019-11-20T18:14:52Z Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay Neumonía enzoótica asociado al virus respiratorio sincitial bovino (BRSV) en terneros en Uruguay Rivero, R. Sallis, E. S. V. Callero, J. L. Luzardo, S. Gianneechini, R. Matto, C. Adrien, M. L. Schild, A. L. Virus respiratorio sincitial bovino Complejo respiratorio bovino Confinamiento Bovine respiratory syncytial virus Bovine respiratory complex Feedlot An outbreak of pneumonia associated with bovine respiratory syncytial virus occurred in July 2012 in a calf-rearing farm in Flores County is described. Morbidity and mortality were 6.71% and 6.57% respectively. Main clinical symptoms were cough, dyspnea, tachypnea, nasal and ocular discharge and fever. Necropsy was performed in two animals which died from respiratory failure. Gross findings in both were antero-ventral consolidation of lungs with caudo-dorsal emphysema and edema. Histopathological study showed bronchointersticial pneumonia, necrotizing bronchiolitis and exudative alveolitis with syncytial cells in lungs. Lung sections, fixed in formalin, were analyzed by immunohistochemistry. Using this technique it was found positive labeling with anti-BRSV in bronchiolar epithelial cells and syncytial cells, confirming the presence of virus-associated pneumonia lesions. Se describe un foco de neumonía asociado al virus respiratorio sincitial bovino (BRSV) ocurrido en Julio de 2012 en un establecimiento dedicado a recría de terneros, en el Departamento de Flores. La morbilidad fue de 6,71% y la mortalidad 6,57%. Los principales síntomas clínicos fueron tos, disnea, taquipnea, descarga nasal y ocular y fiebre. Se realizó la necropsia de dos animales que murieron por insuficiencia respiratoria. En ambos se destacaba pulmones con consolidación anteroventral, enfisema y edema caudo-dorsal. En la histopatología en pulmón se observó neumonía broncointersticial, bronquiolitis necrotizante y alveolitis exudativa con presencia de sincitios epiteliales. Cortes de pulmón fijados en formol fueron analizados por la técnica de inmunohistoquímica. Se comprobó que hubo marcación positiva con el anticuerpo anti-BRSV en las células epiteliales bronquiolares y las células sincitiales de los dos terneros necropsiados, confirmando la presencia del virus en el cuadro de neumonía. Sociedad de Medicina Veterinaria del Uruguay (SMVU) 2013-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed. Evaluado por pares. Revisado por pares. application/pdf https://www.revistasmvu.com.uy/index.php/smvu/article/view/246 Veterinaria (Montevideo); Vol. 49 No. 192 (2013): December; 29-39 Veterinaria (Montevideo); Vol. 49 Núm. 192 (2013): Diciembre; 29-39 Veterinaria (Montevideo); v. 49 n. 192 (2013): Dezembro; 29-39 1688-4809 0376-4362 spa https://www.revistasmvu.com.uy/index.php/smvu/article/view/246/166 Derechos de autor 2013 Sociedad de Medicina Veterinaria del Uruguay |
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Biblioteca de la Facultad de Veterinaria de la UDELAR de UY |
| language |
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Digital |
| author |
Rivero, R. Sallis, E. S. V. Callero, J. L. Luzardo, S. Gianneechini, R. Matto, C. Adrien, M. L. Schild, A. L. |
| spellingShingle |
Rivero, R. Sallis, E. S. V. Callero, J. L. Luzardo, S. Gianneechini, R. Matto, C. Adrien, M. L. Schild, A. L. Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay |
| author_facet |
Rivero, R. Sallis, E. S. V. Callero, J. L. Luzardo, S. Gianneechini, R. Matto, C. Adrien, M. L. Schild, A. L. |
| author_sort |
Rivero, R. |
| title |
Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay |
| title_short |
Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay |
| title_full |
Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay |
| title_fullStr |
Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay |
| title_full_unstemmed |
Enzootic pneumonia associated to bovine respiratory syncytial virus (BRSV) in calves in Uruguay |
| title_sort |
enzootic pneumonia associated to bovine respiratory syncytial virus (brsv) in calves in uruguay |
| description |
An outbreak of pneumonia associated with bovine respiratory syncytial virus occurred in July 2012 in a calf-rearing farm in Flores County is described. Morbidity and mortality were 6.71% and 6.57% respectively. Main clinical symptoms were cough, dyspnea, tachypnea, nasal and ocular discharge and fever. Necropsy was performed in two animals which died from respiratory failure. Gross findings in both were antero-ventral consolidation of lungs with caudo-dorsal emphysema and edema. Histopathological study showed bronchointersticial pneumonia, necrotizing bronchiolitis and exudative alveolitis with syncytial cells in lungs. Lung sections, fixed in formalin, were analyzed by immunohistochemistry. Using this technique it was found positive labeling with anti-BRSV in bronchiolar epithelial cells and syncytial cells, confirming the presence of virus-associated pneumonia lesions. |
| publisher |
Sociedad de Medicina Veterinaria del Uruguay (SMVU) |
| publishDate |
2013 |
| url |
https://www.revistasmvu.com.uy/index.php/smvu/article/view/246 |
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