It is now well established that transmission can occur through respiratory droplet transmission and contact transmission, with aerosol and gastrointestinal routes of transmission still to be defined. If a person is already infected with a novel coronavirus, droplets from coughing and sneezing, and exhaled gases containing the novel coronavirus, may spread to people in close contact with them, leading to the infection of close contacts with the virus. As mentioned above, sneezing and coughing produce droplets containing the virus, which can fall on the surface of clothes or other objects, and then be infected through contact with the mouth, nose, conjunctiva and other parts of the body if touched by a healthy person.