Changes

*Some viruses are thought to induce modifications of the pulmonary defences by:

*Some viruses are thought to induce modifications of the pulmonary defences by:

**Damaging the upper respiratory tract, thereby facilitating bacterial attachment and colonisation, with reduced [[Respiratory System General Introduction - Pathology#Mucociliary escalator|mucociliary clearance]]

**Damaging the upper respiratory tract, thereby facilitating bacterial attachment and colonisation, with reduced [[Respiratory System General Introduction - Pathology#Mucociliary escalator|mucociliary clearance]]

**Decreasing surfactant levels by destroying Type 2 pneu[[Monocytes]]

**Decreasing surfactant levels by destroying Type 2 pneu[[Monocytes|monocytes]]

**Impairing the phagocytic ability of alveolar macrophages

**Impairing the phagocytic ability of alveolar macrophages

===African horse sickness===

===[[African Horse Sickness]]===

[[Image:Lung oedema in African horse sickness.jpg|right|thumb|100px|<small><center>Lung oedema in African horse sickness (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]]

 

===[[Hendra Virus]]===

===[[Hendra Virus]]===