Wearing a mask is one way to cut off the transmission route.
There are three main factors that lead to the spread of infectious diseases: the source of infection, the means of transmission and susceptible people. Controlling one of the three elements can prevent the spread of infectious diseases. Wearing a mask is one of the most important ways to cut off the transmission of respiratory diseases.
The current global epidemic of new coronavirus infections can be transmitted through respiratory droplets, and wearing masks for all people can greatly reduce the infection rate of new coronavirus.
First, wearing masks can largely prevent patients from releasing pathogens into the environment. Second, wearing masks for uninfected people can block the virus from the outside and cut off its droplet transmission.
It is recommended that masks should not be reused, and generally need to be replaced once every 4 to 6 hours so as not to affect the effectiveness of wearing masks.