Pneumonia Alphabet Soup (Part 1) Dysphagia Expert Witness Services Swallow Disorder Expert 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 Updated IDSA ATS Guidelines on Management of Adults With HAP and VAP Cap Vap Hap CAP 2019 HAP VAP 2016 Ref. https: www.idsociety.org practice guideline community acquired pneumonia cap in adults https: www.idsociety.org practice guideline hap_vap