Since the outbreak of novel coronavirus infection pneumonia, the whole society has actively coordinated prevention and control, and the awareness of public disease prevention and control has been significantly enhanced.

But in the actual operation, we still need to pay attention to a few misunderstandings: first, the implementation of large scale spraying disinfection of checkpoints and the ground; the disinfection of the exterior and wheels of cars driving on the road.

The right practice: novel coronavirus contact and transmission can be blocked by preventing the disinfection of the surface. However, the main way of contact transmission is through the hand, so the focus of disinfection in public places should be on the surface of objects often touched in crowded and relatively closed places, such as elevator buttons, door handles and faucets of public toilets, elevators and stair handrails in shopping malls, etc., and the hand hygiene of people is also the focus of attention.

Unless it is clearly contaminated, there is no need to disinfect the ground, the outside of the vehicle and the wheels. Mistake 2: spray alcohol on human body surface and clothes for disinfection.

Correct practice: spraying disinfection can stimulate human skin and mucous membrane, so it is not necessary to directly disinfect human body or clothes. If it is confirmed or suspected patients, the implementation of early isolation and early treatment is the right way. Myth three: use hot mist machine to disinfect external air spray. Correct practice: the external air circulation is good, there is no need to implement air disinfection. Myth four: use alcohol to disinfect indoor air spray. Correct practice: alcohol is a flammable and explosive product and can not be used for spray disinfection of indoor air.

The right way should be to strengthen the indoor window ventilation, maintain air circulation. Mistake 5: use glutaraldehyde to disinfect the environment. Correct way: glutaraldehyde disinfectant is toxic to human and irritating to skin and mucous membrane, so it can not be used for disinfection of environment and skin.

Chlorine containing disinfectant or chlorine dioxide can be used for environmental disinfection. Mistake six: use high concentration chlorine disinfectant (1000mg / L ~ 2000mg / L) for preventive disinfection, and do not use clean water after disinfection. Correct way: chlorine containing disinfectant has strong corrosiveness and volatility, too high concentration is easy to damage human health and pollute the environment. The recommended concentration of chlorine containing disinfectant should be 250mg / L to prevent corrosion.