New coronavirus may be present in rooms where new coronavirus-positive patients have been. Patients who test positive for the New Coronavirus are infected with the New Coronavirus. Places where the patient has stayed may have the virus, which is spread by airborne droplets and can also be transmitted by contact and then enter the respiratory tract, and aerosolized transmission is also likely to occur in confined spaces. In order to prevent the occurrence of C. neoformans, rooms where C. neoformans positive patients have stayed should be decontaminated, and after decontamination, a meter test should be done. A positive test result indicates that the virus is present in the room and it cannot be occupied, while a negative test result indicates that the virus is no longer present and it can be occupied. It is important to be aware of prevention to avoid being infected by the new coronavirus. Rooms where new coronavirus-positive patients have stayed should not be allowed to be occupied by random people in order to avoid being infected by the virus and then infecting other people. 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.