Pneumonia: Infection of the lung parenchyma resulting in inflammation and consolidation of alveolar spaces. Classification Community Acquired Pneumonia (CAP) Hospital Acquired Pneumonia (HAP) (48 hours after admission) Ventilator Cap Vap Hap Practices to prevent non ventilator hospital acquired pneumonia: a narrative review Updated IDSA ATS Guidelines on Management of Adults With HAP and VAP Hospital acquired and ventilator associated pneumonia: Video & Meaning Osmosis