(HealthDay News) -- Bronchitis is typically caused by a respiratory virus, and much less frequently, by a bacterial infection, the American Lung Association says.
Risk factors include having close contact with someone who has bronchitis, failure to get age-appropriate vaccinations, and exposure to tobacco smoke, fumes, dust and air pollution.
The American Lung Association says symptoms of bronchitis typically include:
Sleepy Nurses Vulnerable To Common Cold, Other Infectious Diseases
FDA Proposes Ban on a 'Useless' Decongestant, Phenylephrine
Saltwater Drops in Nose Could Shorten Kids' Colds
