Filenews 11 October 2020
Australian scientists have found that the SARS-CoV-2 coronavirus that causes covid-19 infection can survive up to 28 days on common surfaces, such as mobile phone glass screens and stainless steel.
Researchers at the CSIRO National Research Centre, who published this in the journal of Iology, found that coronavirus survives longer in lower temperatures, as well as on non-porous or very smooth surfaces (compared to porous and uneven surfaces such as cotton, where it is kept less). It also holds more on paper banknotes than on plastic ones.
Our findings suggest that SARS-CoV-2 can remain virulent on surfaces for long periods of time, which reinforces the need for good practices such as regular hand washing and surface cleaning," said Dr Debbie Eagles, deputy director of the CSIRO's Australian Centre for Disease Prevention (ACDP).
"At a temperature of 20 degrees Celsius, which is about room temperature, we found that the virus was extremely resistant, surviving for 28 days on smooth surfaces, such as the glass of mobile phone screens. By comparison, similar experiments with the influenza A virus have found that it survives on surfaces for up to 17 days, which shows how much more resistant SARS-CoV-2 is," he added.
Experiments at temperatures of 30 and 40 degrees Celsius showed that the higher the temperature, the longer the coronavirus survives. According to Australian scientists, the amount of corovirus needed (i.e. the virulent dose) to transmit Covid-19 infection from an infected surface remains under investigation.
Source: RES
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