Spray room, disinfection gun, disinfection cabin for preventing Coronavirus(COVID-19), is it necessary?
New popular actions for epidemic prevention | spray room, disinfection gun, disinfection cabin in all directions , is it necessary?
The white tent is fogged, and everyone who enters the community is spray disinfected. This is said to be the inspiration from the breeding industry; there are also professionals holding large tube spray disinfection guns, facing the buildings, roads, and green belts All-round "scanning" without dead ends ... Such a move makes many people "look at ease".
But is such disinfection effective? Jiefang Daily's News reporter interviewed Zhu Renyi, director of the disinfection department of the Shanghai Center for Disease Control and Prevention, infectious disease prevention and treatment center. He believes that the above-mentioned similar practices belong to "over-disinfection" and are unnecessary and even harmful.
Zhu Renyi: Excessive disinfection means that we have taken repeated disinfection measures in places where there is no possibility of contamination by pathogens or where disinfection is not necessary, or there are no disinfection effects at all. These behaviors are called overdisinfection.
Q2: But you may not know if there is pathogen contamination in this place. What if someone has touched it?
Zhu Renyi: This worry is understandable. The main route of transmission of the new coronavirus is through respiratory droplets and contact transmission. Therefore, if the coronavirus(COVID-19) contaminates the community, office space and street surface, the probability is that the patient's droplets can reach or where the hand often touches, and it is conducive to the location or place where the virus remains. Such as: door handles, doorbell buttons, elevator buttons, elevator inside closed space, stair handrails, indoor environments where patients have stayed, etc. These parts and locations can be disinfected as needed.
Q3: Why is excessive disinfection harmful?
Zhu Renyi: The relevant technical documents stipulate that chemical disinfectants should not be directly sprayed on the human body in large areas. Spray chemical disinfectants may cause eyes, skin irritation, aspiration pneumonia, skin inflammation, allergic reactions, etc., and will seriously cause chronic bronchitis relapse in the elderly and asthma attacks in children.
The channel is used for spray (drain) disinfection of the human body, which is generally used for bioterrorism attacks and other events. Ordinary people go out daily, and the possibility of the whole body being contaminated by viruses is low, and there is no need to disinfect the whole body at all. For spray disinfection, it is necessary to completely wet the whole body and act for a period of time. There is no disinfection effect through the spray channel for a short time.
In short, except for causing human irritation and disease, polluting the environment, wasting human and material resources, and causing panic, this kind of disinfection has no advantage in preventing and controlling the epidemic.
Q4: I think people still think this is unknown virus，still don’t know how much to do to prevent infection
Zhu Renyi: Yes. After the new virus(Coronavirus/COVID-19) comes out, we certainly don’t know about it, but we can have a preliminary judgment based on our understanding of this type of virus. For example, this type of virus has an envelope structure. Generally speaking, the survival time in the external environment is not It will be too long, and it is also sensitive to disinfectants.
For our people, whatever you are at home or office, as long as the windows are often ventilated, wear masks when going out and in contact with people, wash hands frequently, and keep a certain distance from people, our risk of infection will be greatly reduced, and there is no need to excessively Worry, it is not necessary to over-sterilize.
Above normal body temperature may be associated with fevers such as Covid-19 Coronavirus, Ebola, Common Influenza, Norovirus SARS and other flu variants such as Avian Flu, Bird and Swine flu etc.
When people return to public places, body temperature measuring and preventing fever patients from entering the crowd are also necessary steps to prevent cross-contagion.
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