Infections of the respiratory tract are grouped according to their symptomatology and anatomicinvolvement. Respiratory infections are more common in the fall and winter when school starts andindoor crowding facilitates transmission. Upper respiratory infections are common cold, sinusitis, pharyngitis, epiglottitis and laryngotracheitis. Lower respiratory infections are bronchitis, bronchiolitisand pneumonia.The uniqueness of this book is its special references on techniques and procedures thatare used in the treatment of respiratory infections. This book will be highly beneficial to students, teachers and research workers of this field. This book primarily provides comprehensive overview onthis field. The book has been compiled with different chapters based on the original research work byeminent academicians and scientists. This book meets the need of not only the students and teachersbut also professionals of this field. Based on the contents of this book, it provides practical guidelines tothe management and diagnosis of patients requiring medical attention. The main aim of this book is tohelp the physicians and students so that they can understand well this field.