Influenza can be spread through respiratory droplets, so you need to wash your hands frequently and wear a mask when you go out during the peak season. Influenza, also known as influenza, is caused by influenza virus infection, which is a category C infectious disease that causes acute respiratory illness in humans. When a person infected with influenza spreads droplets of the virus in the air through coughing and sneezing, it may cause healthy people to inhale and be infected with influenza. In addition, hands touching items contaminated with influenza virus can also cause infection. When going out, you should wash your hands regularly, wear a mask, wear a mask during the high flu season, and pay attention to proper exercise and balanced nutrition in your daily life to enhance your physical fitness.