Signs and symptoms: Seasonal flu
- Rapid onset of fever (greater than 101°F)
- Dry cough
- Sneezing
- Sore throat
- Headache
- Muscle and joint aches
- Extreme tiredness
- Runny or stuffy nose
- Chills
Stomach symptoms, such as nausea, vomiting, and diarrhea, also can occur but are more common in children than adults.
Video: Seasonal flu vaccination
Signs and symptoms: Influenza A (H1N1) “Swine Flu”
The symptoms are similar to the symptoms of human influenza and include:
- Rapid onset of Fever (greater than 101°F)
- Dry cough
- Sneezing
- Sore throat
- Headache
- Muscle and joint aches
- Extreme tiredness / fatigue
- Runny or stuffy nose
- Chills
- Diarrhea and vomiting are associated with H1N1
As with any flu, swine flu may cause a worsening of underlying chronic medical conditions
Emergency Warning Signs
If you become ill and experience any of the following warning signs:
- Self isolate
- Seek emergency medical care
In children emergency warning signs that need urgent medical attention include:
- Fast breathing or trouble breathing
- Bluish or grayish skin color
- Not drinking enough fluids
- Sever or persistent vomiting
- Not waking up or not interacting
- Being so irritable that the child does not want to be held
- Flu-like symptoms improve but then return with fever and worse cough
- Fever with a rash
In adults, emergency warning signs that need urgent medical attention include:
- Difficulty breathing or shortness of breath
- Pain or pressure in the chest or abdomen
- Sudden dizziness
- Confusion
- Severe or persistent vomiting