(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:
Wildfire Smoke Alters Immune System, Study Says
COVID-19 Linked To Asthma, Seasonal Allergies
Severe Asthma Often Comes With Other Serious Health Problems
New Discovery Could Change How Asthma Is Treated, Scientists Say
UV Air Filters Cut Airborne Asthma Triggers, Study Finds
Living With Cats Not Linked To Worse Asthma in Children
Monthly Injection Could Free People With Severe Asthma From Steroids
Heavy 'Forever Chemical' Exposure Before Birth Increases Childhood Asthma Risk, Study Finds