Wearing a mask is a preventive method for novel coronaviruses. For the general public, wearing a general surgical mask can provide protection. However, care should be taken to standardize the wearing of masks, and masks have a certain expiration date. If the mask gets wet or has been used for a long time, it must be replaced promptly. However, only wearing a mask can not completely isolate the virus. In addition to wearing a mask, but also pay attention to as much as possible room ventilation, wash your hands regularly, try to avoid going to the crowd gathering place, and keep a distance of more than 1m when in contact with people. Perfect protection measures can minimize the risk of infection. The general population does not need to wear N95 masks, only specialized medical staff may need to wear N95 masks when seeing appropriate patients. Source: Dr. Yurai