The flu or influenza is a highly contagious infection of the respiratory tract. It usually occurs in epidemics during the colder months. You can get the flu from breathing the droplet from an infected person or by indirect contact, such as the use of a contaminated drinking glass. The influenza virus then goes into the nose and lungs and causes swelling and a discharge. 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. Drink plenty of decaffeinated hot liquids, such as herbal teas, lemon juice, and honey. Doing so will sooth your throat, relieve congestion and replace body fluids. Suck on hard candies or lozenges.