Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs. Influenza, commonly called the flu.
Fever or feeling feverish/chills, Cough, Sore throat,Runny or stuffy nose,Muscle or body aches,Headaches,Fatigue
Nothing more than bed rest and plenty of fluids to treat the flu. But in some cases, your doctor may prescribe an antiviral medication, such as oseltamivir (Tamiflu) or zanamivir (Relenza). If taken soon after you notice symptoms, these drugs may shorten your illness by a day or so and help prevent serious complications.
As children age, the incidence of illness decreases from 12 per year to 4 per year by the time the child is 5 years old.