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Flu: Signs of Bacterial Infection
A bacterial infection may develop following infection with viral influenza. Signs of a bacterial infection include:
- Ear pain that lasts more than 24 hours or severe ear pain that lasts longer than 1 hour.
- A sore throat that lasts longer than 2 to 3 days despite home treatment and does not "act" like a cold.
- Sinus pain that persists despite 2 to 4 days of home treatment, especially if nasal drainage is colored rather than clear and fever is also present.
- Nasal drainage that changes from clear to colored after 5 to 7 days of flu, while other symptoms (such as sinus pain or fever) are getting worse.
- 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. Mucus coughed up from the lungs is a more serious symptom than mucus that has drained down the back of the throat (postnasal drip).
These infections may sometimes need treatment with antibiotics.
|Primary Medical Reviewer||E. Gregory Thompson, MD - Internal Medicine|
|Specialist Medical Reviewer||Christine Hahn, MD - Epidemiology|
|Last Revised||July 9, 2012|
|By:||Healthwise Staff||Last Revised: July 9, 2012|
|Medical Review:||E. Gregory Thompson, MD - Internal Medicine|
Christine Hahn, MD - Epidemiology
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