You've probably heard a lot about community acquired pneumonia- but what about aspiration pneumonitis, aspiration pneumonia and hospital acquired pneumonia (HAP)? In this episode, we break down these highly relevant etiologies. This episode was written by Shannon Tang (Internal Medicine Resident) and reviewed by Dr. Onofre Moran-Mendoza (Respirology) and Zijing Wu (General Internal Medicine). Infographic by Lucy Lan (medical student).