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The virus COVID-19 It can survive on objects like banknotes or mobile phones for up to 28 days: a study by the Australian National Science Agency reveals. Researchers from Commonwealth Scientific and Industrial Research (Csiro) tested the longevity of the SARS-CoV-2 virus in the dark and at three different temperatures, showing that the survival period decreases at higher temperatures. At 20 degrees Celsius, the virus appears “extremely hard” on smooth surfaces, such as cell phone screens, and can survive for 28 days on banknotes and on glass, steel and plastic. At 30 degrees, the survival period drops to seven days and plummets to just 24 hours at 40 degrees. The presence of the virus on porous surfaces such as cotton is less persistent, up to 14 days at the lowest temperatures and less than 16 hours at the highest, a period in any case “significantly longer” than that assumed by previous studies according to the which the virus could survive up to four days on non-porous surfaces.
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Mobile phones
Trevor Drew, director of the Australian Center for Disease Preparedness, said the study was carried out with samples of attenuated virus placed on different materials and with an “extremely sensitive” method, which found traces of the virus even after a long time. alive capable of infecting cell cultures. “This does not mean that that amount of the virus can infect a human being,” he told public broadcaster ABC, adding however that “if a person touches these materials without precautions and then touches their mouth, eyes or nose , you could contract the disease even more than two weeks after the objects are contaminated.
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