Coronavirus ‘can survive for 28 days on items such as banknotes, phones- new study

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The coronavirus that causes Covid-19 can survive on items such as banknotes and phones for up to 28 days in cool, dark conditions, according to a latest study.
Researchers at CSIRO, Australia’s national science agency, have found that SARS-CoV-2, the virus responsible for COVID-19, can survive for up to 28 days on common surfaces including banknotes, glass – such as that found on mobile phone screens – and stainless steel.



The research, undertaken at the Australian Centre for Disease Preparedness (ACDP) in Geelong, found that SARS-CoV-2:
survived longer at lower temperatures, tended to survive longer on non-porous or smooth surfaces such as glass, stainless steel and vinyl, compared to porous complex surfaces such as cotton and survived longer on paper banknotes than plastic banknotes.
Results was published in Virology Journal.
CSIRO Chief Executive Dr Larry Marshall said surface survivability research builds on the national science agency’s other COVID-19 work, including vaccine testing, wastewater testing, Personal Protective Equipment manufacture and accreditation



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“Establishing how long the virus really remains viable on surfaces enables us to more accurately predict and mitigate its spread, and do a better job of protecting our people,” Dr Marshall said.
Dr Debbie Eagles is Deputy Director of ACDP, which has been working on both understanding the virus and testing a potential vaccine.
“Our results show that SARS-CoV-2 can remain infectious on surfaces for long periods of time, reinforcing the need for good practices such as regular handwashing and cleaning surfaces,” Dr Eagles said.
“At 20 degrees Celsius, which is about room temperature, we found that the virus was extremely robust, surviving for 28 days on smooth surfaces such as glass found on mobile phone screens and plastic banknotes.
Further experiments were carried out at 30 and 40 degrees Celsius, with survival times decreasing as the temperature increased.



The study was also carried out in the dark, to remove the effect of UV light as research has demonstrated direct sunlight can rapidly inactivate the virus.
“While the precise role of surface transmission, the degree of surface contact and the amount of virus required for infection is yet to be determined, establishing how long this virus remains viable on surfaces is critical for developing risk mitigation strategies in high contact areas,” Dr Eagles said.



Director of ACDP Professor Trevor Drew said many viruses remained viable on surfaces outside their host. “How long they can survive and remain infectious depends on the type of virus, quantity, the surface, environmental conditions and how it’s deposited – for example touch vs droplets emitted by coughing,” Professor Drew said.
“Proteins and fats in body fluids can also significantly increase virus survival times.”

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1 COMMENT

  1. What happens makes the situation sad or worrying.
    But its good to provide the information.
    Many of us cannot avoid using money in notes

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