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Rome, October 12, 2020 – Can hold “up to 28 days” on tickets, gloves or mobile phones. The latest study on the Coronavirus on surfaces raise the bar again, a lot. This was brought forward by the Australian National Science Agency, which first demonstrated what was known (and feared) for some time: the COVID-19 it survives more easily and longer in colder temperatures. Instead, heat is a factor that reduces the longevity of the virus. SARS-CoV-2. Perhaps this is also one of the reasons why in summer we had a significant slowdown in infections, despite the fact that our lifestyle has not changed since the last month (where, indeed, many have raised the level of care again ).
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I study
Researchers from Commonwealth Scientific and Industrial Research (Csiro) put the Coronavirus in the dark and at three different temperatures. TO 20 degrees Celsius Covid shows “extremely tough” on smooth surfaces, such as mobile phone screens. In banknotes, glass, steel and plastic it can survive up to 28 days, more than triple what was previously thought. But beware: and 30 constructions Covid ‘dies’ after 7 days, while and 40 buildings it only takes 24 to remove it.
Times change as the types of surfaces change: on porous ones like cotton Sars-Cov-2 lasts up to 14 days at the lowest temperatures and less than 16 hours at the highest, a period however “significantly longer” than what was hypothesized in previous studies according to which the virus could survive up to a maximum. four days on non-porous surfaces.
The method used for the tests is “extremely sensitive,” he explained. Trevor Drew, director of the Australian Center for Disease Preparedness. Specifying that the study was carried out with attenuated virus samples placed on different materials. After some time, traces of Covid capable of infecting cell cultures were found. “This does not mean that that amount of the virus can infect a human,” he told public broadcaster ABC. To the specific question, about the real risk of contagion, however, he added: “If a person comes into contact with these materials without precautions and then touches his mouth, eyes or nose, he could contract the disease even more than two weeks after contamination of objects. “
The coronavirus is known above all for its airborne transmission, the Australian institute stressed. But even the superficial infection deserves to be scrupulously investigated. In “high contact areas” it could be “essential” to mitigate the risk of contagion.
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