*May cause necrotising [[Bronchi and Bronchioles Inflammatory - Pathology#Infectious causes of bronchitis or bronchiolitis|bronchiolitis]] in immune-deficient foals (Arabian foals)
+
*May cause necrotising [[Bronchitis#Infectious causes of bronchitis or bronchiolitis|bronchiolitis]] in immune-deficient foals (Arabian foals)
*Grossly:
*Grossly:
**[[Lungs Ventilation - Pathology#Atelectasis (Collapse)|Atelectasis]] and consolidation of lobules in cranioventral region
**[[Lungs Ventilation - Pathology#Atelectasis (Collapse)|Atelectasis]] and consolidation of lobules in cranioventral region