The coronavirus that causes COVID-19 can survive at least 28 days on surfaces such as plastic or steel at a temperature of 20 degrees Celcius, according to A study from the Australian scientific agency published this Monday.

The SARS-CoV-2 responsible for the pandemic that has infected more than 37 million people on the planet, including 1.1 million deaths, can survive about 10 days longer than the flu virus, notes the Commonwealth of Australia Scientific and Industrial Research Organization (CSIRO).

“At 20 degrees Celcius, which is the room temperature, we found that the virus was extremely strong and survives for 28 days on smooth surfaces such as glass found in mobile phones and plastic banknotes, “said Debbie Eagles, deputy director of CSIRO’s Australian Center for Disease Preparedness.

Higher temperature means less resistance

A 30 degrees Celcius, however, his chances of survival are 21 days on paper tickets and seven in plastic or stainless steel money.

If the temperature is 40 degrees, SARS-CoV-2 can be maintained for 48 hours on plastic surfaces, one day on glass, steel and paper and plastic banknotes and less than 16 hours on cotton garments, according to this research published in the scientific journal Virology Journal.

CSIRO scientists, whose research points to high temperatures reduce the possibility of infection of COVID-19, they inserted a dried virus into an artificial mucus and placed amounts similar to the samples collected from infected patients on various surfaces.

In this way they re-isolated this coronavirus for a month under conditions in which the temperature was varied, and they also placed the samples in the dark to remove the effect of ultraviolet rays.

“While the precise role of surface transmission, the degree of contact with the surface, and the amount of virus required for infection are yet to be determined, we can establish how long this virus survives on surfaces,” Eagles stressed. .

Other factors

For his part, Trevor Drew, director of CSIRO’s Australian Center for Disease Preparedness, explained that the time the virus survives outside of its carrier It depends on the type of virus, the amount in which it occurs, the surface area, the environmental conditions or the way it is expelled from the body.

“Proteins and fats in human fluids also significantly increase the survival time of the virus,” Drew said.

CISRO scientists hope that their discovery will contribute to developing strategies for risk mitigation in high contact areas, as well as in the understanding of the apparent persistent contagion in cold environments with high contamination of proteins or lipids as in slaughterhouses.