The novel coronavirus does not leave the cell to survive. The novel coronavirus has been found to infect mainly humans, and once it leaves the body, the virus has no way to survive. For example, the virus can leave the body through respiratory secretions, and there is no way for the virus to survive after the respiratory secretions are dry. When sneezing or coughing, the virus falls to the ground with the respiratory secretions and loses its infectious significance. However, if the virus survives for a long time, it needs to be based on whether the nucleic acid structure is destroyed, such as heating, disinfectant solution can make the virus nucleic acid structure destruction, can make it completely inactivated. At present, it is believed that if the virus is outside the body at about 20 ℃, ordinary humidity, such as about 40% humidity, the longest survival time may be about 5 hours, but the survival time is not the same as infectious. For example, if the virus is on the clothes, the clothes themselves have a certain adsorption effect, there may be no way for the virus to leave the clothes, and it is no longer infectious, even if it is a live virus, there is actually no threat to people. Content source: Dr. You Lai