It usually occurs in epidemics during the colder months. You can get the flu from breathing the droplets from an infected person or by direct contact, such as sharing eating or drinking utensils. The Influenza virus then goes into the nose and lungs and causes swelling of mucus membranes and drainage. Symptons begin to appear 24 to 48 hours after exposure. These symptoms usually subside in 3 to 5 days, but the cough and weakness may persist.
Fever is usually higher in children than in adults.
Fever that lasts longer than 3 to 5 days is serious. The most common complication is pneumonia but there are many other problems that can be caused by flu. Doing so will sooth your throat, relieve congestion and replace body fluids. Suck on hard candies or lozenges. Avoid dairy products, which can thicken mucus secretions.