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, 11:59, 30 June 2010
*Causative agent: [[Arteriviridae|equine arterivirus]] (EVA)
*[[Nasal Cavity Inflammatory - Pathology|Rhinitis]], peripheral oedema, [[Bronchi and Bronchioles Inflammatory - Pathology|bronchitis/bronchiolitis]], conjunctivitis, periorbital oedema
*Replicates in macrophages and endothelial cells
*Disseminates via the circulatory system causing necrotising arteritis
*[[Lungs Inflammatory - Pathology#Interstitial pneumonia|Interstitial pneumonia]]
*Transmitted by respiratory and venereal routes through direct contact with infected horse or its secretions
*Stallion are a reservoir of infection as they are chronic shedders