Organisms responsible for Atypical Pneumonia.
How Legionella survives inside macrophages to cause Legionnaires' disease, why it spreads through water aerosols, why the urine antigen test is used, and why beta-lactams fail.
Why Mycoplasma pneumoniae has no cell wall and beta-lactams cannot work, how it causes walking pneumonia and cold-agglutinin hemolysis, and how it is diagnosed and treated.
How Coxiella burnetii causes Q fever, why its spore-like form gives it an extremely low infectious dose, the acute vs chronic disease split, phase I and II serology, and treatment.
