Updated IDSA ATS Guidelines on Management of Adults With HAP and VAP 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) Unravelling the complexity of ventilator associated pneumonia: a systematic methodological literature review of diagnostic criteria and definitions used in clinical research Critical Care Springer Nature Link Pneumonia Alphabet Soup: Reworking the Recipes (Part 1) Medbridge Diagnosis, management and treatment of nosocomial pneumonia in ICU Serene Nosocomial Pneumonia, Overview Springer Nature Link