(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:

• • Coughing up mucus that may be yellow or green.
  • Runny and stuffy nose starting a few days before chest congestion.
  • Feeling tired.
  • Sore ribs from prolonged periods of coughing.
  • Wheezing or a whistling sound while breathing.

Copyright © 2018 HealthDay. All Rights Reserved.