What is influenza?
Influenza (the flu) is a highly infectious illness caused by a virus. It is much more serious than a common cold and will leave you ill for up to 10 days.

It may take up to three days to feel symptoms after you catch influenza (the incubation period). Symptoms include:

* a high fever
* headache
* muscle aches and pains
* fatigue
* cough
* sore throat.

Influenza can be a mild or severe illness depending on the type of influenza virus causing it, and the age and general health of the person affected.

Anyone can get influenza — being fit, active and healthy does not protect you from getting this virus.

Anyone can die from influenza — it kills at least 100 New Zealanders every year, including some young, fit people.

Influenza A (H1N1) Swine Flu

Be prepared

If you've got flu symptoms, stay at home for seven days after your symptoms begin or until you have been symptom-free for 24 hours, whichever is longer.

Stop the spread of flu germs by:

* Covering coughs and sneezes
* Regularly washing your hands and drying them thoroughly
* Avoiding contact with sick people
* Reducing time spent in crowded settings.

If your condition worsens, seek medical advice by PHONING Healthline 0800 611 116 or your healthcare provider.