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.
Vaccines against influenza contain dead viruses or subunits, thus being non-infectious. Vaccines containing subunits only are highly purified and little reactogenic, still they are not recommended for children under 6 months due to their low immunogenicity. For the first vaccination children between 6 and 36 months old should receive 2 doses of the vaccine. Thus, in the first year of life, even when vaccinated, children are highly vulnerable to infections by the influenza virus.