According to the CDC, the flu mainly causes the following symptoms:

- fever, or feeling feverish or chills
- cough
- sore throat
- runny or stuffy nose
- muscle or body aches
- headaches
- fatigue
- vomiting and diarrhea (more common in children than adults)

Though most people can recover from the flu in a few days to less than two weeks, some can develop complications, including:

- sinus and ear infections
- pneumonia
- myocarditis (inflammation of the heart)
- encephalitis (inflammation of the brain)
- myositis and rhabdomyolysis (inflammation of muscle tissues)
- multi-organ failure
- sepsis (extreme inflammatory response triggered by respiratory tract infection)
- worsen chronic medical problems
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence