2 doctors weighed in:

What are the top causes of bronchitis and pneumonia?

2 doctors weighed in
Dr. Sue Ferranti
Internal Medicine
1 doctor agrees

In brief: Bacteria or viral

Both acute bronchitis and pneumonia are usually caused by either bacterial or viral infections.
Some common bacterial causes include strep pneumoniae, staph aureus, b. Catarhalis as well as many others. Chronic bronchitis is a form of copd, usually due to smoking.

In brief: Bacteria or viral

Both acute bronchitis and pneumonia are usually caused by either bacterial or viral infections.
Some common bacterial causes include strep pneumoniae, staph aureus, b. Catarhalis as well as many others. Chronic bronchitis is a form of copd, usually due to smoking.
Dr. Sue Ferranti
Dr. Sue Ferranti
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