Coronavirus can survive up to 28 days on some surfaces — but heat makes a difference: study.

Global News

Breaking news & current latest Canadian news headlines; national weather forecasts & predictions, local news videos, money and financial news; sports stats and scores.

https://globalnews.ca/

Click to play video 'How Long the Coronavirus Lasts on Different Surfaces'

WATCH: How Long the Coronavirus Lasts on Different Surfaces

The novel coronavirus can survive for up to 28 days on common surfaces such as glass, stainless steel and banknotes, an Australian government research agency has found.

The study said the items — chosen for their prevalence in public areas, such as hospital rooms and public transport, as well as high-contact surfaces like cellphones or ATMs — were tested at temperatures of 20C, 30C and 40C.

“These findings demonstrate SARS-CoV-2 can remain infectious for significantly longer time periods than generally considered possible,” read the study, which was published in the peer-reviewed Virology Journal.

How much a material was warmed had a dramatic effect on the virus’ shelf life, the study said.

Researchers found that the virus was still detectable 28 days later on glass, plastic bills, stainless steel, vinyl and paper currency that was heated to 20C but only lingered for up to 9.1 days on cotton cloth materials.

That number dropped to seven days for stainless steel, plastic notes and glass that was heated to 30C, and three days for vinyl and cotton cloth.

“At 40C, virus recovery was significantly reduced” to up to 48 hours, the study read, including all surfaces except cotton cloth, which saw no traces of the virus after 24 hours.

Their results contradict earlier research published in the Lancet, which concluded in May the virus could live for up to six days on stainless steel or plastic and up to three days on banknotes and glass.

Trending Stories

In May, the U.S. Centers for Disease Control and Prevention said that a person was more likely to catch COVID-19 from standing in close proximity with someone than from contaminated surfaces.

“The virus does not spread easily in other ways,” including by touching surfaces, the agency said.

“ But that doesn’t mean touch is zero-risk. It may be possible that a person can get COVID-19 by touching a surface or object that has the virus on it and then touching their own mouth, nose, or possibly their eyes. This is not thought to be the main way the virus spreads, but we are still learning more about this virus,” the CDC wrote.

Dr. Alon Vaisman, an infection control and infectious disease physician at the University Health Network in Toronto, said the point is simple: “Wash your hands.”

The risk of transmission from surface contamination is unlikely to be a major driver in COVID-19 cases, he said, adding confirmed cases were more likely to be driven up from “superspreader events” such as in-person church services.

Notably, the study did not expose any of the surfaces they tested to UV rays. Vaisman said the virus is easily “inactivated” by sunlight, which is why COVID-19 is less prevalent in outdoor settings.

The surfaces tested had no insulation from the virus either, which he said was unrealistic, as surfaces in places like hospitals, schools and on public transportation are regularly cleaned.

But even if a surface was contaminated, Vaisman said, “it’s relatively easy to kill the virus.”

COVID-19 can survive up to nine hours on a person’s hands, but “it’s very, very easily killed with alcohol,” he said.

“Even if it’s a small component, people are still going to clean surfaces regularly, routinely, and we’re going to continue doing that at hospitals, for example,” said Vaisman.

“Even if it survives for days, if you’re washing your hands, it can’t possibly infect you.”

© 2020 Global News, a division of Corus Entertainment Inc.

Related news

Europe braces for a ‘difficult winter’ as it breaks coronavirus records.

WHO’s European regional director Dr. Hans Kluge said “hospitalizations have risen to levels unseen since the spring” and deaths have sharply risen by more than 30 per cent.

Curfew Lifted In US City After Unrest Over Police Killing Of Black Man.

Philadelphia's mayor said Thursday a curfew he had put in effect the previous evening over unrest that followed the police killing of a Black man would not be maintained for a second night.

1 4

US Approves Soldier's Extradition To Japan Over Carlos Ghosn Escape.

The United States has given the green light to extradite a former special forces soldier and his son to Japan for assisting auto executive Carlos Ghosn's daring escape, although a judge Thursday put...

1 1

TikTok Countersues Rival Video App Triller In Patent Defense.

TikTok and its parent firm ByteDance have fired back in court against a patent lawsuit by rival video-sharing app Triller, in a move aimed at heading off infringement claims.

‘They came with dogs:’ Genomes show canines, humans share long history.

Those ancient pets are not only moving evidence of their owners' esteem, they're now part of research hinting at how far back dogs and humans go.

France lockdown: What went wrong and what can Canada learn?.

What's happening in France -- and why -- shares some parallels with the resurgence of the coronavirus in Canada. 

Store guard stabbed 27 times after asking Chicago sisters to wear masks.

The sisters, ages 18 and 21, have been charged with attempted first-degree murder.

MLB investigating player who returned to field after coronavirus diagnosis.

Justin Turner is under investigation after he celebrated with his Los Angeles Dodgers teammates and removed his mask following a mid-game coronavirus diagnosis.

U.S. election results: Live, real-time election results as America votes

Global News will have live, real-time results in the 2020 U.S. election as polls close across the country.

US Plans Sales Of Top-Of-Line F-35 Fighter Jets To UAE: Lawmaker.

The United States has agreed to sell top-of-the-line F-35 fighter jets to the United Arab Emirates following its recognition of Israel, potentially shifting the regional power balance, a lawmaker said...

By continuing to browse World News (UAZMI), you acknowledge that you have read the Terms of Use and agree to the use of cookies