Influenza is a highly contagions viral infection of the nose, throat, and lungs that occurs most often in the late fall, winter, and spring. It is a serious infection. Common symptoms include a high fever that begins suddenly muscle / body aches, chill, tiredness, and sudden onset.
Influenza frequently causes people to miss school and work but in some cases there are severe complication such as pneumonia. The best way to protect against influenza is to receive an influenza vaccination every year.