VAP, VAC, IVAC and Ventilator Associated Events: The Need for Objectivity for Surveillance VAP Bundle Ventilator Associated Pneumonia Ventilator Associated Pneumonia ( VAP) is a lung infection that occurs in patients who are on mechanical ventilation for more than 48 hours. A VAP bundle is a set of Ventilator associated pneumonia (VAP) and pleural empyema caused by multidrug resistant Acinetobacter baumannii in HIV and COVID 19 infected patient: A case report ScienceDirect The Vexing Problem of Ventilator Associated Pneumonia: Observations on Pathophysiology, Public Policy, and Clinical Science Richard H Kallet, 2015