Update on ventilator associated pneumonia F1000Research Ventilator Associated Pneumonia (VAP) VAP is a subtype of hospital acquired pneumonia or Nosocomial pneumonia which occur in people who are receiving mechanical ventilation. It develops more than 48 hours after tracheal What is the definition of hospitalacquired pneumonia (HAP) and how does it differ from ventilatorassociated pneumonia (VAP)? Frontiers Drug Prevention and Control of Ventilator Associated Pneumonia File:VAE, VAP and PNEU Definition Changes for 2015.webm Wikimedia Commons