Both are often caused by viral infections, but the particular viruses responsible frequently differ. The symptoms of bronchiolitis can differ from bronchitis both in how the infection affects the ...

Chronic bronchitis caused by environmental irritants, for instance, is not contagious. But acute or viral bronchitis is. "Viral bronchitis can be spread from person to person by inhaling droplets ...

In both viral and bacterial bronchitis, germs enter the bronchial tubes of your lungs and cause irritation. Sometimes, a cold or other respiratory infection turns into bronchitis. Chronic ...

Bronchitis is most commonly caused by a viral infection, but it can also result from anything that irritates the airways. Various viruses, such as influenza (flu), respiratory syncytial virus (RSV ...