At present, confirmed cases in the community mostly refer to confirmed cases of neo-coronavirus. It is possible to open windows and ventilate the area in such cases where there are confirmed cases in the opposite building. Once a person is diagnosed with a new coronavirus infection in the community, staff will disinfect the area where the patient has passed through with disinfectant to kill any new coronavirus that may remain in the air. For public areas, the staff will also disinfect them regularly and the possibility of the virus being present in the air is very low. Moreover, there is a limit to the survival time of the virus. In a relatively comfortable temperature, the virus usually does not survive in the air for more than 24 hours. Ventilation is also an effective measure to cut off the airborne pathway, it is recommended to open the windows more often, and each time not less than 15 minutes, usually pay attention to good personal hygiene, courier and other items to pay attention to the disinfection, so as to avoid the spread of the virus.