The coronavirus resists copper for no longer than four hours, decreases the infectious load after five on the cardboard, to disappear after 24. On plastic after seven hours it loses strength, but disappears only after 72, while on steel it disappears completely after 48. The results of this research published by the New England Jounral of medicine have increased the precautions to be taken to stay away from the infection. Professor Roberto Cauda, director of infectious diseases of the Gemelli Polyclinic in Rome, however, warns: «We are talking about laboratory tests, they made a culture of viruses, they tested them, they assessed the duration. But when someone emits the virus it does it together with biological material. In short, what happens in the laboratory is not exactly superimposable with what happens in reality. Just be careful, but don’t emphasize. But there are some good procedures to follow, such as always cleaning the handles. Or disinfect the elevator, to be taken by yourself anyway ».
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RULES
In summary: the maximum attention to the surfaces we touch, especially outside our home, must be there, but first of all some golden rules apply which also prevent the unfortunate possibility that we touched a surface where there were traces of the coronavirus . “Which ones are they? Stay at home, wash your hands often, never touch your eyes, nose and mouth and if you really have to go out always keep a safe distance from any other person ».
Plastic, according to research, is one of those materials in which coronavirus can remain for several hours and with which we most often deal when we go shopping. Example: we bought the classic six bottle pack of mineral water at the supermarket, how do we behave? «We simply throw the plastic with which the package is wrapped, we can clean the bottles with water and detergent. If we touch the pizza box it is very unlikely that the coronavirus can remain for a long time – explains Professor Cauda – but even in this case there is a preventive measure that applies to everyone: washing your hands ».
In summary: a good detergent or even a good disinfectant can help us and we want to eliminate any risk from the handles of the front door, from the keys of the elevators, from the plastic packages. It is no coincidence that in Asian countries such as Singapore, subway operators are often seen cleaning the machines where tickets are made. The Higher Institute of Health explains that in any case “the use of simple disinfectants is able to kill the virus by canceling its ability to infect people. You must always disinfect frequently used objects (cell phones, earphones, microphones) with a damp cloth based on alcohol ».
DROPS
The main form of coronavirus transmission remains that of droplets, droplets an infected person disperses by sneezing, coughing, talking. But there is an indirect form, linked to the resistance of the virus on the surfaces that we can touch them. “Here then, let me repeat – says Professor Cauda – the importance of washing your hands and never touching your mouth, nose and eyes”.
There is another fear: if I went out shopping, when I come back is it right for me to take off my shoes and change my clothes to be sure not to bring the coronavirus inside the house? «This may be an excess of prudence, but on the other hand it is always advisable to do it for hygienic reasons. It should be common practice never to use the shoes with which we walked on the street inside a house. It is also right to change clothes. And certainly washing our clothes often is useful. But I repeat: the three golden rules remain: do not leave the house, do not touch your face, keep your distance from other people ».
Last updated: 12:01
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