During the new pneumonia, it is emphasized that windows must be opened and ventilated when possible, more than 2-3 times a day for more than 15-30 minutes each time. The virus itself cannot survive outside the body, so there will be no virus in the outdoor air. Opening windows to let in outdoor air can kill pathogens in the indoor air, such as new coronaviruses or other viruses. If the living conditions are not good, for example, if the windows are opened after the outside is a relatively busy street with high traffic, it is not recommended to open the windows. If the outdoors is an open place, you should try to open the windows as much as possible to ensure that the virus in the air is killed in time, which is actually the easiest and most effective way to disinfect. If you can’t open the windows and ventilate, you can also disinfect the room by ultraviolet light and use 75% alcohol and 84 disinfectant to achieve the effect of disinfection. Content source: Dr. You Lai