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The coronavirus can remain on surfaces such as banknotes, mobile phone screens and stainless steel for up to 28 days, the researchers said.
The data comes from a study by the Australian National Science Agency. Studies have shown that SARS-Cove-2 can survive longer on these surfaces than previously thought.
This experiment was carried out in the dark. It was previously known that this virus can be eradicated with ultraviolet light.
Experts have expressed doubts about whether the coronavirus is transmitted to humans from the surface in real life.
The coronavirus is mainly transmitted by coughing, sneezing, or talking to people.
Evidence has also been found that Covid-19 can spread from particles floating in the air.
According to the US Centers for Disease Control, Kovid-19 can be transmitted from metals and plastics. Although it is not common.
What does the research say?
Previous laboratory tests have shown that SARS-Cove-2 can survive two to three days in glass and two days in glass and up to six days in plastic and stainless steel.
However, a study by the Australian company CSIRO found that the virus remains on smooth surfaces such as glass, plastic and paper notes on mobile phone screens for up to 28 days.
It is also “extremely strong” at 20 degrees Celsius or 8 degrees Fahrenheit, that is, at room temperature and in the dark.
By comparison, the flu virus can survive up to 18 days in the same situation.
The study, published in the Journal of Virology, found that SARS-COV-2 survived shorter temperatures than cold ones. The virus cannot survive more than 24 hours at 40 degrees Celsius on the same surface.
It can last longer on smooth surfaces than perforated material like fabric. There are no contagious viruses on clothes for so long.
Disagreement
Professor Ron Eckles, former director of the Common Cold Center at Cardiff University, criticized the study, saying the virus could survive up to 28 days, adding that the information was “spreading undue fear among the public.”
“The virus spreads from mucus by coughing and sneezing and dirty fingers to the surface, and this study did not say that fresh human mucus is the main carrier of the virus.”
“The fresh mucus is quite unfavorable for the survival of the virus, as it contains a large number of white blood cells that produce enzymes to destroy the virus and also contains antibodies and other chemicals to neutralize the virus.”
“I think the infectious virus will last a few hours in the mucus on the surface. Not a few days.”
In a study published in the Lancet in July, Emanuel Goldman, a professor of microbiology at Rutgers University, said that “the chances of infection through inanimate surfaces are very low.”
He says the risks the study talks about are much less real.
Last week, Monica Gandhi, a professor in the Department of Medicine at the University of California, Los Angeles, said that the coronavirus does not spread from the surface.
Why is this investigation urgent?
CSIRO CEO Dr. Larry Marshall said: “Once we know for sure how long the virus lasts on a given surface, we can provide more accurate information about its spread and prevent its spread.
The researchers say that the survival of stork-cov-2 in stainless steel at low temperatures also suggests that covid-19 can spread from meat processing and cold storage.
Thousands of slaughterhouse and meat-processing factory workers around the world are blamed for the coronavirus test.
CSIRO researchers have confirmed previous research that the virus can survive in fresh and frozen foods.
The World Health Organization says that there is no definitive case of Kovid-19 infection through food or food packaging. However, this problem has also been mentioned in the list of precautions to avoid spreading the virus.
Source: BBC
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