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Complications
By Mayo Clinic staffIf you're young and healthy, influenza usually isn't serious. Although you may feel miserable while you have it, the flu usually goes away with no lasting effects. But high-risk children and adults may develop complications such as:
- Ear infections
- Acute sinusitis
- Bronchitis
- Pneumonia
- Encephalitis
Of these, pneumococcal pneumonia, a serious bacterial infection of the lungs, is the most common and most serious. For older adults and people with a chronic illness, pneumonia can be deadly. The best protection is vaccination against both pneumococcal pneumonia and influenza.
