With the pandemic of coronavirus knocking on the door, one of the questions that needed to be answered is about the stability of the new coronavirus, that is, how long it can maintain its capacity for infection in the environment.
Depending on the material evaluated, Sars-CoV-2 remains intact for hours and even days, points out new study, published in the form of pre-print (without review by other scientists) on the medRxiv platform on the 9th.
In the form of an aerosol, that is, inside microdroplets in the air, the half-life of the virus, that is, the time necessary for its quantity to fall in half, is 2.74 hours. This is equivalent to saying that the amount of viruses would reach 1% of the initial amount in 18 hours.
On surfaces such as cardboard, steel and plastic the amount of viral particles would take 2.3, 3.6 and 4.4 days to reach one hundredth of the initial, respectively.
Compared to Sars-CoV-1, a relative of the new coronavirus that causes severe acute respiratory syndrome, which scared the world between 2002 and 2004, there were more similarities than differences. Only the cardboard pathogen survival rate is longer than that of the predecessor.
"Our results indicate that both transmission through aerosol and through objects are plausible, since the virus remains viable in aerosols for hours and on surfaces for days," conclude the researchers.
Researchers from the US National Institutes of Health, Princeton University, California (in Los Angeles) and the country's Centers for Disease Controls participated in the work.
As of Thursday (12), more than 127,000 people have been diagnosed with covid-19, the disease caused by the new coronavirus; more than 4,700 died.
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