About COVID-19 disinfection, it should be graded differently according to different exposures.
1, Preventive disinfection can be applied at homes and in public places where you have no direct contact with positive COVID-19 infection cases.
COVID-19 is mainly transmitted by respiratory droplets and close contact. Long time staying in relatively closed environments like public elevators, toilets have the possibility for aerosol transmission.
Preventive disinfection is mainly for the disinfection of surface of various environmental objects, air and hands.
2, The objects and place that the COVID-19 cases touched may become the" foci."
There are mainly two kinds of disinfection in foci:
First, disinfection at any time. It can be applied when the COVID-19 cases is still in the foci;
Second, terminal disinfection. It is a one-time disinfection after the COVID-19 cases has left, it can be applied to make sure that the site after terminal disinfection and various items in it no longer have the presence of pathogens of COVID-19.
3, There is no need for outdoor roads, outdoor air and open area environment to be disinfected.
Until now, due to the lack of relevant research on the crowded outdoor crowd, it is temporarily impossible to determine whether it is needed or not.