From Common Infection to Critical Threat Pneumonia is a lung infection that can be: Community acquired (CAP) contracted outside healthcare settings Hospital acquired (HAP) develops during a hospital stay Ventilator associated (VAP) Ventilator Associated Pneumonia (VAP) EMCrit Project Screening for ventilator associated pneumonia infection through a breath test Oral Hygiene Prevents Pneumonia in Patients on Ventilators Dentistry Today