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 What is VAP?, Ventilator Associated Pneumonia is a lung infection that develops 48 hours or more after endotracheal intubation. It increases ventilator days, costs, and mortality., The Power of Ventilator Associated Pneumonia (VAP): An Overview (2026) Ventilator associated pneumonia Wikipedia