Ventilator associated pneumonia (VAP) is a type of pneumonia that develops at least 48 hours after a patient was intubated and placed on the mechanical ventilator. It's a preventable lung infection that can Infection Control: Ventilator Associated Pneumonia (VAP) Prevention is a focused, evidence based clinical program designed for doctors involved in the care of mechanically ventilated patients. VAP, Inc. Wikipedia Ventilator associated pneumonia: pathobiological heterogeneity and diagnostic challenges Nature Communications