Influenza that is influenza, its pathogen that is the pathogen is mainly influenza A, B, C viruses. 1. Influenza A virus, fast spreading, infectious, pathogenic, mutable, easy to cause other diseases, people of all ages and animals may be infected, poor control can cause a wide range of influenza outbreaks. 2. Influenza B virus, relative to influenza A virus, its speed of transmission, infectiousness, pathogenicity, mutability are weaker, generally only in the human transmission, children are more easily infected than adults, patients infected with symptoms are relatively mild. 3. Influenza C viruses are more stable and less common than influenza A and B viruses. Clinical influenza is mostly caused by influenza A and B viruses. There are also other types of influenza pathogens. Patients suffering from influenza will have symptoms such as runny nose, sore throat and fever, etc. They should go to the hospital in time to determine which virus is the influenza pathogen through blood tests and other tests, and then follow the doctor’s instructions for treatment.