Bacterial or viral bronchitis, how can i tell?

Severity....: Typically, a bacterial bronchitis will give you a higher fever, discolored sputum, malaise, etc. The symptoms with a viral infection tend to be less severe without a fever, clearer sputum, etc. However, there is overlap in symptoms so if you are not sure, you should see your doctor so the infection can be diagnosed and treated. Both can produce a significant and severe cough.