Line 8:
Line 8:
*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 [[Lungs Circulatory - Pathology#Pulmonary oedema|oedema]], drop in milk yield in adult cattle
+
*Complications include [[Lungs Ventilation - Pathology#Emphysema|emphysema]] and [[Pulmonary Oedema|oedema]], drop in milk yield in adult cattle
====Epidemiology====
====Epidemiology====