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According to researchers of (CSIRO), Covid19 virus can survive longer on non-porous or smooth surfaces . Pixabay

The virus responsible for Covid19 can remain infectious on surfaces for long periods of time as researchers at Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australia’s national science agency, have found that it 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 and 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.


The study, published in the Virology Journal, showed that the Covid19 virus survived longer on paper banknotes than plastic banknotes.

“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 Covid19 virus remains viable on surfaces is critical for developing risk mitigation strategies in high contact areas,” said one of the study authors Debbie Eagles, Deputy Director of ACDP.

“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,” said Professor Trevor Drew, Director of ACDP.


According to the studies, Covid19 can last for a longer period of time on mobile phone screens. Pixabay

“Proteins and fats in body fluids can also significantly increase virus survival times.”

CSIRO Chief Executive 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 (PPE) manufacture and accreditation, and big data dashboards supporting each state.

“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,” Marshall said.

“Together, we hope this suite of solutions from science will break down the barriers between us, and shift focus to dealing with specific virus hotspots so we can get the economy back on track.”

The research involved drying virus in an artificial mucus on different surfaces, at concentrations similar to those reported in samples from infected patients, and then re-isolating the virus over a month.


Reinforcement of good practices such as regular handwashing and cleaning surfaces is mandatory to defeat Covid19. Pixabay

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.

“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,” Eagles said.

ALSO READ: Risk and Disease Severity to Be Considered During COVID Vaccine Distribution

“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.

“For context, similar experiments for Influenza A have found that it survived on surfaces for 17 days, which highlights just how resilient SARS-CoV-2 is,” Eagles said. (IANS)


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The aim of the book is to teach children that families can exist in different forms, and show them how to accept the diversity in family backgrounds.

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Delhi-based author Pritisha Borthakur is set to release her new book, 'Puhor and Niyor's Mural of Family Stories'. The 1,404-word children's book was put together to address a new kind of societal debacle in the family system. The author says the aim is to teach children that families can exist in different forms, and show them how to accept the diversity in family backgrounds.

The author who named the book after her twin sons -- Puhor and Niyor -- is a parent who has seen and heard the tales of ridicule and discrimination suffered by many in India and beyond. She says the book is an artistic illustration for kids that details how different families can live and coexist. Whether it's children with two dads or two moms, children with a single dad or single mom, and even multiracial family units, Borthakur's book teaches love, understanding, and compassion towards unconventional families.

Beyond race, gender, color, and ethnicity which have formed the bases for discrimination since the beginning of time, this book aims to bring to light a largely ignored issue. For so long, single parents have been treated like a taboo without any attempt to understand their situations; no one really cares how or why one's marriage ended but just wants to treat single parents as villains simply for choosing happiness and loving their children.

Homosexual parents, a relatively new family system, is another form that has suffered hate and discrimination for many years. Pritisha emphasizes the need to understand that diversity in people and family is what makes the world beautiful and colourful. 'Puhor and Niyor's Mural of Family Stories' is a firm but compassionate statement against all forms of discrimination on the bases of sexual identity, gender, race, and even differences in background

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