Pneumonia, an inflammatory condition of the lung, is one of the most common serious infections, causing two million deaths annually among young and old alike. This book studies the symptoms, diagnoses and treatment of pneumonia. Topics discussed include the modes of supportive treatment in patients with pneumonia; pneumocystis jirovecii in AIDS patients; nosocomial pneumonia surveillance and prevention in PICU and NICU; ventilator-associated pneumonia; community acquired staphylococcal pneumonia associated with influenza and radiological patterns of pulmonary infections.