Influenza (flu) is far more dangerous than a bad cold. It’s a disease of the lungs, and it can lead to pneumonia. Each year about 114,000 people in the U.S. are hospitalized and about 20,000 people die because of the flu. Most who die are over 65 years old. But small children less than 2 years old are as likely as those over 65 to have to go to the hospital because of the flu.