A bacterial infection may develop following infection with viral
influenza. Signs of a bacterial infection include:
- Feeling short of breath.
- A fever that doesn't go away.
- A cough that lingers more than 7 to 10 days after other symptoms have cleared, especially if it is bringing up mucus (productive).
- Yellow, green, rust-colored, or bloody mucus that is coughed up from the lungs, especially while other symptoms are getting worse.
- Sinus, throat, or ear pain that is new or doesn't go away.
These infections may sometimes need treatment with antibiotics.
Current as of: March 9, 2022
Author: Healthwise Staff
Medical Review: E. Gregory Thompson MD - Internal Medicine
Adam Husney MD - Family Medicine
Christine Hahn MD - Epidemiology