Asthma is associated with severe outcomes of respiratory viral infections. The airway and oral microbiota play important roles in mediating immune responses to viral infections. This study evaluated d
Microbes of the human respiratory tract are important in health and disease, but accurate sampling of the lung presents challenges. Lung microbes are commonly sampled by bronchoscopy, but to acquire s
Abbreviations: SD, standard deviation; NA, not applicable; PCV-7, 7-valent pneumococcal conjugate vaccine; URTI, upper respiratory tract infection.aDefined as more than 4 hours per week with at least