RT Book, Section A1 Goodloe, Jeffrey M. A2 Cydulka, Rita K. A2 Fitch, Michael T. A2 Joing, Scott A. A2 Wang, Vincent J. A2 Cline, David M. A2 Ma, O. John SR Print(0) ID 1143140321 T1 Bronchitis, Pneumonia, and Novel Respiratory Infections T2 Tintinalli's Emergency Medicine Manual, 8e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9780071837026 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1143140321 RD 2024/10/10 AB Acute bronchitis is a commonly encountered, self-limited, infection producing inflammatory changes within the larger airways. Sharing the viral pathogens of upper respiratory infections, including those of the common cold, acute bronchitis is often caused by one of the following: influenza A or B virus, adenovirus, rhinovirus, parainfluenza virus, respiratory syncytial virus, or coronavirus. Far less frequent in etiology, the bacterial pathogens Streptococcus pneumoniae, Haemophilus influenzae, Chlamydia pneumoniae, Mycoplasma pneumoniae, and Bordatella pertussis may lead to more severe presentations in older populations, especially in those with increased comorbidities.