Influenza A is contagious, and it is important to pay attention to the protection of influenza A, reduce the chance of virus transmission, and actively treat it. Influenza A is mainly caused by the influenza A (H1N1) virus infection, spread through the respiratory droplets, infectious, fast spreading, the virus from the end of the incubation period will start to spread. However, the influenza A (H1N1) virus is relatively weak and does not cause widespread pandemic transmission. If you suffer from influenza A, try not to share the same sealed space with others in your daily life. Influenza A patients should wear masks, avoid close contact with others, and if possible, should isolate themselves to reduce the chances of influenza A transmission. When the body appears suspected of influenza A symptoms, but also need to go to the regular hospital in a timely manner in order to clarify the diagnosis, seek standardized treatment programs.