The epidemiological characteristics of new coronaviruses include the presence of an infectious agent, a route of transmission and a susceptible population. New coronavirus infection is a new infectious disease, similar to the epidemiological characteristics of common infectious diseases, including the existence of sources of infection, means of transmission and susceptible populations. The source of infection of new coronavirus mainly includes new coronavirus infected people, in the incubation period that is infectious, 5 days after the onset of infectiousness is stronger. Routes of transmission are generally through respiratory droplet transmission, aerosol transmission and direct contact, and contact with infected objects may also cause transmission.
Tip: “New coronavirus pneumonia and new coronavirus pneumonia” mentioned in this article have been renamed to “new coronavirus infection” on December 26, 2022, as announced by the National Health Commission.