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 Ventilator associated pneumonia: The central role of transcolonization ScienceDirect Ventilator Associated Pneumonia (VAP) in Neurocritical Patients: The Hidden Dialog of Brain and Infection Hospital Acquired and Ventilator Associated Pneumonia Oncohema Key Ventilator associated pneumonia: pathobiological heterogeneity and diagnostic challenges Nature Communications