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Bovine Respiratory Syncytial Virus (view source)
Revision as of 17:33, 19 February 2011
, 17:33, 19 February 2011no edit summary
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*Replicates in nasal epithelium -> throughout upper respiratory tract -> bronchial tree
*Replicates in nasal epithelium -> throughout upper respiratory tract -> bronchial tree
*Syncytia form -> shed into bronchioles
*Syncytia form -> shed into bronchioles
−*Complications include [[Lungs Ventilation - Pathology#Emphysema|emphysema]] and [[Pulmonary Oedema|oedema]], drop in milk yield in adult cattle
+*Complications include [[Pulmonary Emphysema|emphysema]] and [[Pulmonary Oedema|oedema]], drop in milk yield in adult cattle
====Epidemiology====
====Epidemiology====
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*Outbreaks of RSV associated disease usually occur associated with winter housing
*Outbreaks of RSV associated disease usually occur associated with winter housing
*Gross pathology in severe cases
*Gross pathology in severe cases
−**Cranioventral [[Lungs Ventilation - Pathology#Atelectasis (Collapse)|atelectasis]] and consolidation
+**Cranioventral [[Atelectasis|atelectasis]] and consolidation
−**[[Lungs Ventilation - Pathology#Emphysema|Interstitial emphysema]]
+**[[Pulmonary Emphysema|Interstitial emphysema]]
***More prominent in the caudal lung lobes
***More prominent in the caudal lung lobes
***Results from bronchoconstriction which results in airway obstruction - this constriction is thought to arise from [[Mast Cells|mast cell]] degranulation and histamine release
***Results from bronchoconstriction which results in airway obstruction - this constriction is thought to arise from [[Mast Cells|mast cell]] degranulation and histamine release