1.Influenza is highly contagious, the common cold is weak 2.Influenza has obvious seasonality, the common cold seasonality is not obvious 3.Influenza manifests itself as high fever, the common cold does not have fever or low fever 4.Influenza systemic symptoms are obvious, the common cold systemic symptoms are not obvious 5.The risk of death from influenza is much greater than the common cold 6.Influenza A virus is widely present in animals in addition to infecting people 7.Influenza B virus Influenza C viruses can infect humans and pigs, but the symptoms are mild after infection 9. Influenza D viruses mainly affect cattle, and it is not clear whether they cause disease in humans 10. Influenza A viruses of H1N1 and H3N2 subtypes, and influenza B viruses of Victoria and Yamagata types are currently infecting humans.