Lower respiratory tract infections are one the most frequent causes of medical consultation in primary care. They are also one of the main causes of emergency visits and hospital admissions. The majority of these infections occur in the bronchial tree and include a large spectrum of aetiologies and clinical manifestations, from mild acute bronchitis to severe bronchiectasis and exacerbations of chronic obstructive pulmonary disease. In this Monograph, a series of prestigious researchers and clinicians provide an overview of the advances in the pathogenesis, manifestations and new approaches to treatment of bronchial infection in a wide variety of clinical scenarios. This book offers the reader the best existing scientific evidence that can be applied to the care of patients with any kind of bronchial infection.