When a person with the flu coughs or sneezes, large numbers of the flu virus are expelled into the air. These virus particles are inhaled by others and the virus gains entry in the nose, throat, and lungs. Within one to three days these people develop flu symptoms. Most people develop nasal congestion, a sore throat, and cough. If you develop flu symptoms, be sure to drink plenty of fluids to keep yourself from getting dehydrated.
Bed rest is essential.
There are anti-viral medications that your doctor can prescribe. They are most effective when prescribed early in the course of the disease - within 48 hours of the onset of symptoms. If you develop flu symptoms, call your doctor as soon as possible. Ideally, you should have received the flu vaccine in the fall. The vaccine is very effective at preventing influenza and is very safe.