What is the flu----symptoms flu.
The flu is a respiratory illness caused by the influenza virus. The flu is not the same as a cold.For most people, the flu is a drag, but it goes away in a week or two.If you have the flu, you'll have lots of company. The flu is a contagious respiratory illness caused by influenza viruses. flu is a common, contagious illness that is like a very bad cold.
symptoms flu:
unusual tiredness,
* headache,
* runny nose,
* sore throat,
* shortness of breath or cough,
* loss of appetite,
* aching muscles,
* diarrhoea or vomiting.



