There are three modes of transmission of novel coronavirus infection. One is direct contact, especially with some infected patients. Talking droplets or exhaled gas can cause infection after close contact, and the other is contact transmission. For example, droplets sprayed by patients accumulate on the surface of objects, which will infect healthy people after contact. For example, these viruses will stay on doorknobs and fruits. At the same time, there is the diffusion of aerosol. Fog droplets mixed in the air will form aerosol, which will cause infection once inhaled by human body.
At present, what we can do for COVID-19 is to vaccinate COVID-19 vaccine in time to prevent it. We should keep indoor air circulating at ordinary times, but we should also pay attention to avoid staying in some places where the air is not circulating. If we go out, we must wear masks. Wash your hands and disinfect your clothes when you get home. If you have symptoms of fever and respiratory infection in your life, you must go to the hospital in time.
Finally, COVID-19 is highly contagious. Now many people have asymptomatic infections, which does not mean that patients will not be contagious, so prevention is still very important.