E cigarette, or Vaping Product, Use Associated Lung Injury (EVALI) Fact Sheets Yale Medicine Ventilator associated pneumonia (VAP), a lung infection that develops in a person who is on a ventilator, can occur when germs enter through the tube and get into the patient's lungs. This is What are Ventilator Associated Pneumonias Ventilator Associated Events and How to Reduce Their Prevalence in Your Hospital Vapotherm Which intervention helps prevent ventilator associated pneumonia (VAP)?