Wearing a mask can prevent the transmission of novel coronavirus pneumonia, but it is limited to ordinary medical surgical masks and N95 masks. If you do not go to crowded places, fever clinics, or visit patients in isolation wards, etc., a general surgical mask is sufficient. Its can prevent droplet transmission from close contact. It is also very important to do self-isolation by washing hands frequently and ventilating more often. You can not wear a mask when you are alone, you must respond to the national call to wear a mask when you go out, keep indoor air circulation, drink more water and strengthen physical exercise. Now it is important to reduce unnecessary movement of people, minimize going out and reduce contact with others, which is the most fundamental way of prevention, as there are more infected people without symptoms. If there is significant discomfort, including fever, dry cough and weakness, be sure to go to your local fever clinic immediately for diagnosis. Content source: Dr. Ararai