This book comprehensively covers the microbiome in respiratory disease, from the initial research study to the disease-specific implications and related applications. Research on the respiratory microbiome is increasing in volume and scope. This reflects rapidly growing interest in the study of respiratory disease to understand how microbiota shape mechanisms of disease pathogenesis.  The respiratory tract spans the nasal passages, sinus cavities, oropharynx, and the tracheobronchial tree of the lungs.  In these compartments of the upper and lower respiratory tract, the microbiota have now...